The order of the arrangement of the angles in the question (see attached drawing based on a similar question on the website, created with MS Word) indicate that the angles ∠3 and ∠13 are congruent. The correct option is therefore;
a║b, Converse of the Alternate Interior Theorem
What are congruent angles?Congruent angles are angles that have the same measure.
The lines that must be parallel, such that ∠3 ≅ ∠13 is indicated by the definition of the relationship between ∠3 and ∠13 as follows;
Statement \({}\) Reason
1. ∠3 ≅ ∠13 \({}\) 1. Given
2. ∠3 and ∠13 are alt int. ∠s\({}\) between a and b 2. Definition
3. Line a is parallel to line b \({}\) 3. Conv of the alt int. ∠s theorem
The lines that must be parallel are line a and line bThe reason for the conclusion is based on the converse of the alternate interior angles theorem as follows;
Angle ∠3 and angle ∠13 are alternate interior angles, which are angles located on the inside and on the opposite sides of the common transversal of two lines.
The converse of the alternate interior angles theorem state that if the alternate interior angles formed between two lines, a and b and their common transversal are congruent, then the two lines, a and b are parallel (a ║ b).
The correct option is therefore;
a ║ b, Converse of the Alternate Interior Angles Theorem
Learn more about the converse of the alternate interior angles theorem here:
https://brainly.com/question/11495328
#SPJ1
The temperature reading that is halfway between −10 degrees and 40 degrees is ___ degrees.
If the temperature was −3 degrees in the morning and 8 degrees in the afternoon, the change in temperature during that time is ____ degrees.
If the temperature has been changing at a rate of −1.5 degrees each hour, and it is currently 5 degrees, the temperature 4 hours ago was ___ degrees.
If the temperature continues to change at this rate of −1.5 per hour, and it is currently 5 degrees, the temperature in 4 hours will be ____ degrees.
Answer:
30, +11, 11, -1
Step-by-step explanation:
-10 + 30 = 10, 40 - 30= 10
-3 + 11 = 8
5 + (1.5 x 4) = 11
5 - (1.5 x 4) = -1
Simplify: xy(x+5y)(x+2y)
Answer:
x3y+7x2y2+10xy3
Step-by-step explanation:
Help on this question please?
Answer:
im not fully sure but I'd say it is 9(5+0.78)
Let f(x)=√x with f:R→R. Discuss the properties of f. Is it injective, surjective, bijective, is it a function? Why or why not? Under what conditions change this?Explain using examples.I'm having some trouble figuring out this equation.
The function f(x)=√x with f:R→R is injective and surjective but not bijective.
Injective (or one-to-one): f(x) is injective, which means that if f(x1) = f(x2), then x1 = x2. In other words, if the square root of x1 is equal to the square root of x2, then x1 and x2 are equal.
Surjective (or onto): f(x) is surjective, which means that for every y in the codomain (R), there exists an x in the domain (R) such that f(x) = y. In other words, the square root of any real number can always be expressed as a real number.
Bijective: f(x) is not bijective. The square root function is not bijective because it is not defined for negative values of x.
Function: A function f is a function if for every x in the domain of f, there is exactly one y in the codomain of f such that f(x) = y. In other words, each x in the domain is mapped to exactly one y in the codomain.
In the case of f(x) = √x, it is a function. For every x in the domain of f, which is [0,∞), there is exactly one y in the codomain of f, which is [0,∞), such that f(x) = y.
To know more on Bijective
https://brainly.com/question/29738050
#SPJ4
sample evidence can prove that a null hypothesis is true
Sample evidence can support a null hypothesis, but it cannot prove it to be true.To test this hypothesis, researchers collect and analyze a sample of data.
Sample evidence can provide support for a null hypothesis, but it cannot prove it to be true. In statistical hypothesis testing, the null hypothesis assumes that there is no significant relationship or difference between variables. To test this hypothesis, researchers collect and analyze a sample of data.
If the sample evidence does not provide strong enough support to reject the null hypothesis, it means that the data does not provide enough evidence to conclude that there is a significant relationship or difference. However, this does not prove that the null hypothesis is true, as there is always a possibility of Type II error (false negative).
For example, let's say we want to test if a new drug is effective in reducing pain. The null hypothesis would be that the drug has no effect. After conducting a study and analyzing the sample data, if we fail to reject the null hypothesis, it means we don't have enough evidence to conclude that the drug is effective. However, it doesn't prove that the drug is truly ineffective.In summary, sample evidence can support a null hypothesis, but it cannot prove it to be true.
Learn more about Hypothesis here,https://brainly.com/question/606806
#SPJ11
Explain how to show that a quadratic equation contains a perfect square trinomial
Answer:
An expression is said to a perfect square trinomial if it takes the form ax2 + bx + c and satisfies the condition b2 = 4ac. The perfect square formula takes the following forms: (ax)2 + 2abx + b2 = (ax + b)
Step-by-step explanation:
Factor x2+ 6x + 9
Solution
We can rewrite the expression x2 + 6x + 9 in the form a2 + 2ab + b2 as;
x2+ 6x + 9 ⟹ (x)2 + 2 (x) (3) + (3)2
Applying the formula of a2 + 2ab + b2 = (a + b)2 to the expression gives;
= (x + 3)2
= (x + 3) (x + 3)
19. Solve the following inequality.
Answer:
c
Step-by-step explanation:
(5y - 1) = 4y + (9y - 4) = 5y
2y > .75
Answer:
C. The solution set is {y|y > 0.75}.
Step-by-step explanation:
Given :
5y - 1 < 9y - 4Add 4 to each side.
5y - 1 + 4 < 9y - 4 + 45y + 3 < 9ySubtract 5y from each side.
5y + 3 - 5y < 9y - 5y4y > 3y > 3/4y > 0.75Solution set
C. The solution set is {y|y > 0.75}.
30 identical sticks lined up in a row and five of them are to be chosen. how many choices are there if no two of the chosen sticks are consecutive?
The number of choices when choosing five sticks from a row of 30 with no two consecutive sticks is C(30,5) - C(29,3) which is equal to 3,628 choices.
The formula used to calculate the number of choices when choosing five sticks from a row of 30 with no two consecutive sticks is C(30,5) - C(29,3).
C(30,5) is a combination formula which calculates the number of possible combinations for 30 items taken five at a time. This formula would give us the total number of possible combinations of five sticks.
C(29,3) is another combination formula which calculates the number of possible combinations for 29 items taken three at a time. This formula gives us the number of combinations in which three consecutive sticks are chosen.
Therefore, the number of choices when choosing five sticks from a row of 30 with no two consecutive sticks is C(30,5) - C(29,3) which is equal to 3,628 choices.
Learn more about combinations here:
https://brainly.com/question/20211959
#SPJ4
A wakeboard ramp has a rise of 3 feet and a run of 8 feet, what is the slope of the ramp? the slope of the wakeboard in our example was 3/5 how do the steepness of each ramp compare
Answer:
3/8
Step-by-step explanation:
slope = rise/run = 3/8
For the function 8-(x-3)^2
find the coordinates of the vertex of its graph.
The given function is in vertex form, which is:
f(x) = a(x - h)^2 + k
where (h, k) is the vertex of the parabola.
Comparing the given function to the vertex form, we can see that a = -1, h = 3, and k = 8.
Therefore, the vertex of the graph is at the point (h, k) = (3, 8).
So the coordinates of the vertex of the graph are (3, 8).
WILL GIVE BRAINLY 15 points
Michaela is making memory boxes. She wants to cover the boxes with sheets of decorative paper on all sides before filling them. This net represents a single memory box.
How much paper is needed to cover each memory box?
Enter your answer in the box
The amount of paper required to cover each memory box is 5220 square inches.
Considering the edge of the cube = L units.
Thus the area of one side of the cube will be equal to L² unit².
Now, there will be 6 such sides for a closed cube then the total surface area will be 6*(L)² unit²
The given length breadth and height of the box is 35in, 24in, and 30in.
The formula for the surface area of a rectangular prism is:
SA = 2(lw + lh + wh)
Where:
SA = surface area l = length w = width h = height
For this memory box, the given length (35 in), width (24 in), and height (30 in).
Substituting these values into the formula the SA obtained will be:
SA = 2(35 × 24 + 35 × 30 + 24 × 30) SA
= 2(840 + 1050 + 720) SA
= 2(2610) SA = 5220inches²
Therefore, the answer will be 5220 square inches.
To learn more about the surface area of a cube click on:
https://brainly.com/question/26706156
#SPJ2
If \( f(x, y)=e^{3 x} \sin (4 y) \) then: \[ \nabla f(-1,-3)= \]
The gradient of the function \(\(f\)\) at the point \(\((-1, -3)\)\) is:
\(\[\nabla f(-1, -3) = \left(-3e^{-3} \sin(12), 4e^{-3} \cos(12)\right)\]\)
To find the gradient of the function \(\( f(x, y) = e^{3x} \sin(4y) \)\) at the point \(\((-1, -3)\)\), we need to compute the partial derivatives with respect to \(\(x\) and \(y\)\) and evaluate them at that point.
The gradient of a function is given by:
\(\[\nabla f(x, y) = \left(\frac{{\partial f}}{{\partial x}}, \frac{{\partial f}}{{\partial y}}\right)\]\)
Let's calculate the partial derivatives:
\(\[\frac{{\partial f}}{{\partial x}} = \frac{{\partial}}{{\partial x}}\left(e^{3x} \sin(4y)\right) = 3e^{3x} \sin(4y)\]\)
\(\[\frac{{\partial f}}{{\partial y}} = \frac{{\partial}}{{\partial y}}\left(e^{3x} \sin(4y)\right) = 4e^{3x} \cos(4y)\]\)
Now, we can evaluate these derivatives at the point \(\((-1, -3)\):\)
\(\[\frac{{\partial f}}{{\partial x}}\Bigr|_{(-1, -3)} = 3e^{3(-1)} \sin(4(-3)) = 3e^{-3} \sin(-12)\]\)
\(\[\frac{{\partial f}}{{\partial y}}\Bigr|_{(-1, -3)} = 4e^{3(-1)} \cos(4(-3)) = 4e^{-3} \cos(-12)\]\)
Simplifying further:
\(\[\frac{{\partial f}}{{\partial x}}\Bigr|_{(-1, -3)} = 3e^{-3} \sin(-12) = -3e^{-3} \sin(12)\]\)
\(\[\frac{{\partial f}}{{\partial y}}\Bigr|_{(-1, -3)} = 4e^{-3} \cos(-12) = 4e^{-3} \cos(12)\]\)
Therefore, the gradient of the function \(\(f\)\) at the point \(\((-1, -3)\)\) is:
\(\[\nabla f(-1, -3) = \left(-3e^{-3} \sin(12), 4e^{-3} \cos(12)\right)\]\)
To know more about function visit-
brainly.com/question/30116196
#SPJ11
A device has two electronic components. Let T1T1 be the lifetime of Component 1, and suppose T1T1 has the exponential distribution with mean 5 years. Let T2T2 be the lifetime of Component 2, and suppose T2T2 has the exponential distribution with mean 4 years.
Suppose T1T1 and T2T2 are independent of each other, and let ð=min(T1,T2)M=min(T1,T2) be the minimum of the two lifetimes. In other words, ðM is the first time one of the two components dies.
a) For each ð¡>0t>0, find P(ð>ð¡).
[Hint: If the minimum has to be bigger than ð¡t, what does that tell you about each of the lifetimes?]
b) Use Part a to identify the distribution of ð. Provide its name and parameter (or parameters, if there are more than one).
c) Find the numerical value of ð¸(ð)
For the two electronic components with exponential distribution ,
P(ð > ð¡) = \(e^{(-\delta_{i} /5)- (-\delta_{i} /4) }\).
Name of ð is exponential distribution and its parameters is ð ~ Exp(1/5 + 1/4).
Its numerical value of ð¸(ð) is 2.22 years
For a device with two electronic components T1 and T2.
T1 and T2 are independent of each other.
To find P(ð > ð¡),
Consider that ð (the minimum of the two lifetimes) is greater than ð¡.
This implies that both T1 and T2 must be greater than ð¡.
Since T1 and T2 are independent exponential distributions with means 5 years and 4 years respectively,
The probability of each of them being greater than ð¡ is given by the exponential survival function,
P(T1 > ð¡) = \(e^{(-\delta_{i} /5)}\)
P(T2 > ð¡) = \(e^{(-\delta_{i} /4)}\)
Since T1 and T2 are independent, the probability that both T1 and T2 are greater than ð¡ is the product of their individual probabilities:
P(ð > ð¡)
= P(T1 > ð¡) × P(T2 > ð¡)
= \(e^{(-\delta_{i} /5)}\) × \(e^{(-\delta_{i} /4)}\)= \(e^{(-\delta_{i} /5)- (-\delta_{i} /4) }\)
From the above result,
we can see that the distribution of ð the minimum of the two lifetimes follows the exponential distribution.
The parameter of the exponential distribution is the sum of the individual mean parameters,
ð ~ Exp(1/5 + 1/4)
To find the numerical value of ð¸(ð), we need to calculate the expected value of ð.
For the exponential distribution,
The expected value (mean) is given by the reciprocal of the rate parameter.
Here, the rate parameter is the sum of the individual mean parameters,
ð¸(ð) = 1 / (1/5 + 1/4)
Calculating the value,
ð¸(ð)
= 1 / (0.2 + 0.25)
= 1 / 0.45
≈ 2.22 years
The numerical value of ð¸(ð) is approximately 2.22 years.
Therefore, for the exponential distribution ,
P(ð > ð¡) = \(e^{(-\delta_{i} /5)- (-\delta_{i} /4) }\).
Distribution name of ð is exponential distribution and its parameters is the sum of the individual mean parameters ð ~ Exp(1/5 + 1/4).
Numerical value of ð¸(ð) is 2.22 years.
Learn more about exponential distribution here
brainly.com/question/29848831
#SPJ4
An event where two or more things happen at the same time is called ______
A. Dependent event
B. Compound event
C. Independent event
D. Organized list
The event where two or more things happen at the same time is called a "compound event." the correct answer is B.
What is probability?
Probability is a measure of the likelihood of an event occurring. It is a number between 0 and 1, where 0 means the event is impossible and 1 means the event is certain to happen.
A compound event refers to a situation where two or more events occur at the same time. In other words, it is an event that consists of multiple outcomes happening simultaneously.
For example, if you flip a coin and roll a dice at the same time, the resulting event would be a compound event because it involves the outcomes of both actions occurring simultaneously. It is important to distinguish between compound events and independent or dependent events, as they have different probabilities and methods of calculation. Compound events are often used in probability theory and statistics to analyze and predict the likelihood of multiple outcomes occurring at the same time.
The event where two or more things happen at the same time is called a "compound event." Therefore, the correct answer is B.
To learn more about probability from the given link:
https://brainly.com/question/30034780
#SPJ1
if a person studies 4.5 years, what is the single value that is the best predicted test score assume that there is a significant linear correlation between years of study and test scores
This will give us a single value that is the best-predicted test score for a person who studies 4.5 years.
Based on the significant linear correlation between years of study and test scores, we can use regression analysis to find the best predicted test score for a person who studies 4.5 years. The regression equation can be represented as:
predicted test score = a + bx
where "a" is the y-intercept (the predicted test score when years of study is 0), "b" is the slope (the change in predicted test score for every additional year of study), and "x" is the number of years of study.
Assuming we have the necessary data and calculations for the regression equation, we can substitute x = 4.5 into the equation to find the predicted test score:
predicted test score = a + b(4.5)
Know more about correlation here:
https://brainly.com/question/31588111
#SPJ11
Explain what is wrong with the following proof by mathematical induction that all horses are the same color:
Clearly all horses in any set of 1 horse are all the same color. This completes the basis step. Now assume that all horses in any set of n horses are the same color. Consider a set of n + 1 horses, labeled with the integers 1, 2,...,n + 1. By the induction hypothesis, horses 1, 2,...,n are all the same color, as are horses 2, 3,..., n, n + 1. Because these two sets of horses have common members, namely, horses 2, 3, 4,...,n, all n + 1 horses must be the same color. This completes the induction argument.
The proof by mathematical induction that all horses are the same color is flawed because the basis step does not make any sense. Because the basis step is invalid, the proof is incorrect overall.
Specifically, for the basis step, we cannot start with a set of 1 horse, as there is no other horse to compare it to. Hence, we cannot make any definitive claims about a single horse, and the basis step cannot be completed. The inductive step, on the other hand, is correct, assuming that the basis step was valid. By assuming that all horses in a set of n horses are the same color, we can show that horses 1 through n + 1 must be the same color. This is because the sets of horses from 1 to n and from 2 to n + 1 overlap, and therefore, by the transitive property of equality, all horses in the set from 1 to n + 1 must be the same color. However, because the basis step is invalid, the proof is incorrect overall.
To know more about induction visit:
https://brainly.com/question/32376115
#SPJ11
1 hundred + 5 tens+ 12 ones
Answer:
162
Step-by-step explanation:
This is the answer because:
1) 1 hundred is 100
2) 5 tens is 50
3) 12 ones is 10 and 2
4) Now, we have to add 100 + 50 + 10 + 2 which is 162
5) 162 is 1 hundred, 6 tens, and 2 ones
Hope this helps!
Answer:
162
Step-by-step explanation:
you take the 1 hundred and then the ones make another ten and the ones have 2 the tens have 6 and the hundreds have 1 so
100
60
+02=162
A certain set of plants were constantly dying in the dry environment that was provided. The plants were moved to a more humid environment where life would improve. (a) Before moving all of the plants, the rescarchers wanted to be sure the new environment was promoting lfe. The study found that 21 out of 50 of the plants were alive after the first month. What is the point estimate?
The point estimate for the plants' survival rate in the humid environment is 42%.
To calculate the point estimate, divide the number of successful outcomes (plants alive) by the total number of trials (total plants). In this case, 21 plants were alive out of 50, so the calculation would be 21/50.
This gives you a decimal (0.42), which you can convert into a percentage by multiplying by 100, resulting in 42%. The point estimate represents the proportion of plants that survived in the humid environment after one month, providing an indication of the new environment's effect on the plants' survival.
To know more about point estimate click on below link:
https://brainly.com/question/30057704#
#SPJ11
3x -4y = 5
5x +4y = 3
(1) Would you be eliminating terms with the x or the y variables?
(2) Would you use addition or subtraction to eliminate the terms?
Step-by-step explanation:
You would eliminate the terms with the y variables.You would use addition because you are trying to eliminate y to find the value of x.is (1,4) a solution to the system:
y=3x+1
y=-x+5
To find:-
Whether (1,4) is a solution to the given system of equations.Answer:-
The given system of equation is ,
\(\begin{cases}y = 3x + 1 \dots (\rm 1 ) \\ y = -x + 5 \dots (\rm 2) \end{cases}\)
This given set of equations are linear equations in two variables , which can be solved by various methods like elimination method and substitution method .
We would use here substitution.
We cam here substitute the value of \( y \) from equation 1 into equation 2 as ,
\(\implies y = - x + 5\)
\(\implies 3x + 1 = - x + 5\)
Now solve for \(x\) ,
\(\implies 3x + x = 5 - 1 \)
\(\implies 4x = 4 \)
\(\implies x =\dfrac{4}{4} \)
\(\implies x = 1 \)
Now substitute this value of \( x\) into equation 2 to find out \(y\) as ,
\(\implies y = -1 + 5\)
\(\implies y = 4 \)
Hence we got our answer as , x = 1 and y = 4 , which is the solution to the given set of equations.
Hence we conclude that (1,4) is a solution to the system of equations.
Yes , (1,4) is a solution .
and we are done!
THIS IS SO HARD :(
In a class of p students, the average (arithmetic mean) of the test scores is 70
in another class of n students, the average score for the same test is 92
when the scores of the two classes have combined the average of the test score is 86
what is the value of p/9?
According to the solution we have come to find that, The value of p/n is 3/8.
What is mean?Mean is a statistical term that refers to the average value of a set of numbers. It is calculated by summing up all the values in the set and then dividing the sum by the total number of values.
Let's use the formula for the weighted average to solve this problem:
weighted average = (sum of values * weight) / (total weight)
Let p be the number of students in the first class and n be the number of students in the second class. Then, we can write:
(p * 70 + n * 92) / (p + n) = 86
Expanding the numerator:
70p + 92n = 86(p + n)
Simplifying and rearranging:
16p = 6n
p/n = 6/16 = 3/8
Therefore, the value of p/n is 3/8.
To learn more about mean visit the link:
https://brainly.com/question/1136789
#SPJ9
Answer with explanation
Answer: a and d
Step-by-step explanation:
(to find all points of discontinuity, set denominator equal to zero and solve)
\(x^2-7x+10=0\\\\\)
(to factor, find two numbers when added together equal -7 and when multiplied together equal 10)
-2 + -5 = -7
-2(-5) = 10
-2 and -5 are the two numbers
\((x-2)(x-5)=0\\\\x-2=0\\x=2\\\\x-5=0\\x=5\\\\x=2,5\)
How to do u substitution with indefinite integrals.
The corresponding differential element, rewrite the integral in terms of the new variable, integrate with respect to the new variable, replace the new variable with the original variable, and simplify the expression to find the solution.
To perform u-substitution with indefinite integrals, follow these steps:
Identify a suitable substitution: Look for a part of the integrand that resembles the derivative of a function. Choose a variable u to substitute for that part.
Calculate du: Take the derivative of u with respect to the original variable. This will help us express du in terms of the original variable.
Rewrite the integral: Substitute the chosen variable and du in the original integral, replacing the part to be substituted with u and the corresponding differential element du.
Integrate with respect to u: Treat the integral as a new integral with respect to u. Evaluate the integral using the rules of integration.
Replace u with the original variable: Rewrite the result of the integration in terms of the original variable.
Simplify and solve: If necessary, simplify the expression further or perform additional algebraic manipulations to obtain the final result.
Let's illustrate these steps with an example:
Consider the integral ∫(2x + 3)² dx.
Identify a suitable substitution: Let u = 2x + 3.
Calculate du: Take the derivative of u with respect to x: du/dx = 2. Rearrange the equation to solve for du: du = 2 dx.
Rewrite the integral: In terms of u and du, the integral becomes ∫u² (du/2).
Integrate with respect to u: Treat the integral as a new integral with respect to u: (1/2) ∫u² du = (1/2) * (u³/3) + C, where C is the constant of integration.
Replace u with the original variable: Substitute back u = 2x + 3 in the result: (1/2) * ((2x + 3)³/3) + C.
Simplify and solve: Further simplify the expression if necessary to obtain the final result.
In summary, to perform u-substitution with indefinite integrals, identify a suitable substitution, calculate the corresponding differential element, rewrite the integral in terms of the new variable, integrate with respect to the new variable, replace the new variable with the original variable, and simplify the expression to find the solution.
Learn more about variable here
https://brainly.com/question/28248724
#SPJ11
Help Please This is hard
Answer: 63
Step-by-step explanation:
Let's start with what we know. A straight line measures an angle of 180. So, at point m, we have one degree measuring 118. We do:
180 - 118 = 62
So, 62, is the angle in the corner.
We also know that the sum of the angles in a triangle = 180 so:
10x - 2 + 62 = 180
10x + 60 = 180
10x = 120
x = 12
So angle K is 63.
(Hope this is correct)
I NEED HELP ASAP!!!!!!!!!
Using transformations and composite function, it is found that:
The function was reflected across the y-axis, stretched in the vertical direction by a factor of 3, shifted horizontally right, shifted vertically down.The numeric value of the composite function is a(b(0)) = 8.What are transformations on the graph of a function?Transformations in the graph of a function involve operations such as multiplication/division or sum/subtraction, either in the domain of the function, involving values of x, or the range, involving values of y.
Examples of transformations are as follows:
Translation: Translation left/right or down/up.Reflections: Over one of the axes or over a line.Rotations: Over a degree measure.Dilation: Coordinates of the vertices of the original figure are multiplied by the scale factor.For this problem, we have that:
The function was multiplied by a negative number, hence it was reflected across the y-axis.The function was multiplied by 3, hence it was stretched in the vertical direction by a factor of 3.x -> x + 4, hence the function was shifted horizontally right.y -> y - 2, hence the function was shifted vertically down.The summary is:
The function was reflected across the y-axis, stretched in the vertical direction by a factor of 3, shifted horizontally right, shifted vertically down.
What is the composite function of f(x) and g(x)?The composite function of f(x) and g(x) is given by:
(f ∘ g)(x) = f(g(x)).
From the table, we have that:
b(0) = -1.a(b(0)) = a(-1) = 8.More can be learned about transformations in a function at https://brainly.com/question/28687396
#SPJ1
The projectile motion of an object can be modeled using s(t) = gt2 + v0t + s0, where g is the acceleration due to gravity, t is the time in seconds since launch, s(t) is the height after t seconds, v0 is the initial velocity, and s0 is the initial height. The acceleration due to gravity is –4.9 m/s2. A rocket is launched from the ground at an initial velocity of 39.2 meters per second. Which equation can be used to model the height of the rocket after t seconds? s(t) = –4.9t2 + 39.2 s(t) = –4.9t2 + 39.2t s(t) = –4.9t2 + 39.2t + 39.2 s(t) = –4.9t2 + 39.2t – 39.2
Answer:
s(t) = -4.9t² + 39.2t
Step-by-step explanation:
Given the projectile motion of an object can be modeled using s(t) = gt2 + v0t + s0, where g is the acceleration due to gravity, t is the time in seconds since launch, s(t) is the height after t seconds, v0 is the initial velocity, and s0 is the initial height. The acceleration due to gravity is –4.9 m/s²
Given
g = -4.9m/s²
v0 = 39.2m/s
s0 = 0m (the initial height)
On substituting into the formula;
s(t) = gt² + v0t + s0
s(t) = -4.9t² + 39.2t + 0
s(t) = -4.9t² + 39.2t
This gives the equation that models the height
Answer:
b
Step-by-step explanation:
edge 2020
Help me with this, I will be posting more questions!
Answer:
17/2
Step-by-step explanation:
Distribute 2 to (3x-5)-> 6x-10
Move terms (6x and 7) and change the signs-> 4x-6x= -10-7
Combine like terms-> - 2x= - 17
Divide -2 on both sides so that x will be left alone-> -2/-17
Negative divided by negative turns positive-> final ans. 2/17
The arm span and foot length were both measured (in centimeters) for each of 20 students in a biology class. The computer output displays the regression analysis.
Which of the following is the best interpretation of the coefficient of determination r2?
About 37% of the variation in arm span is accounted for by the linear relationship formed with the foot length.
About 65% of the variation in foot length is accounted for by the linear relationship formed with the arm span.
About 63% of the variation in arm span is accounted for by the linear relationship formed with the foot length.
About 63% of the variation in foot length is accounted for by the linear relationship formed with the arm span.
Answer:
The guy above me is completely wrong hahaha.
The correct answer should have a 63%.
It's probably D. The terminology is a little confusing.
The equation of the output looks like:
-7.611 + .186(x) = y
x --> Arm span
y --> Foot span
The linear relationship is formed with the armspan.
Answer: It’s D
Step-by-step explanation:
I took the test
In a recent survey, 30% of people surveyed indicated chocolate was their favorite flavor of ice cream. Suppose we select a sample of 14 people and ask them to name their favorite flavor of ice cream a. How many of those in the sample would you expect to name chocolate? (Round your answer to the nearest whole number.) .b What is the probability exactly six of those in the sample name chocolate? (Round the probability to 5 decimal places and the final answer to 4 decimal places.) c What is the probability six or more name chocolate? (Round your probability to 4 decimal places.)
a) We would expect about 4 people in the sample to name chocolate as their favorite flavor of ice cream.
b) The probability of exactly six people naming chocolate is 0.20190.
c) The probability of six or more people naming chocolate is 0.1118.
a) We can use the expected value formula for a binomial distribution, where the probability of success is p = 0.3 and the number of trials is n = 14:
E(X) = np = 14 × 0.3 = 4.2
Rounding this to the nearest whole number, we would expect about 4 people in the sample to name chocolate as their favorite flavor of ice cream.
b) To find the probability that exactly six people name chocolate, we can use the binomial probability formula:
P(X = 6) = (14 choose 6) ÷ 0.3⁶ × 0.7⁸
Using a calculator, we can evaluate this expression as:
P(X = 6) = 0.2019
Rounding this to 5 decimal places, the probability of exactly six people naming chocolate is 0.20190.
c) To find the probability that six or more people name chocolate, we can use the cumulative binomial probability formula:
P(X ≥ 6) = 1 - P(X < 6) = 1 - P(X ≤ 5)
We can calculate P(X ≤ 5) using the binomial cumulative distribution function or by summing the probabilities for X = 0, 1, 2, 3, 4, and 5. Using the latter method, we get:
P(X ≤ 5) = (14 choose 0) × 0.3⁰ × 0.7¹⁴ + (14 choose 1) × 0.3¹ × 0.7¹³ + (14 choose 2) × 0.3² × 0.7¹² + (14 choose 3) × 0.3³ × 0.7¹¹ + (14 choose 4) × 0.3⁴ × 0.7¹⁰ + (14 choose 5) × 0.3⁵ × 0.7⁹
Using a calculator, we can evaluate this expression as:
P(X ≤ 5) = 0.8882
Therefore, the probability that six or more people name chocolate is:
P(X ≥ 6) = 1 - P(X ≤ 5) = 1 - 0.8882 = 0.1118
Rounding this to 4 decimal places, the probability of six or more people naming chocolate is 0.1118.
Learn more about probability here,
https://brainly.com/question/31616076
#SPJ4
how to evaluate 3-(-10)
Answer:it's 13
please let me know if this is wrong
Answer:
Answer:
i am uncertain by the question
Step-by-step explanation:
10-3=7
10/3=3.333...
Answer:
the answer is "what are you doing step
bro"