Answer:
4,7
Step-by-step explanation:
c=4.5
y=1/2x+4.5
so the first is correct
gm how are yall hellllllp mw plz
Answer:
Goodmorning! The answer in Explanation.
Step-by-step explanation:
Your answer would be A!!!
• if you multiply 5280*6=31680
• then 5280divided by 2
• being 2640
• then 31680+2640=34320 ft. which is your answer, A.
Mark me as brainliest!
The area of a rectangle is x^2 + 4x - 5. If we factored this out, we would get the lengths and widths of the sides of the rectangle. For what value(s) of x would these side lengths not make any sense? Why?
Answer:
If X ≤ 1, these side lengths has no sense.
Step-by-step explanation:
We can factored the expression X² + 4X - 5 in a expression in the form:
(X+a) (X+b)
Where a*b = -5 and a+b = 4
That means a could be 5 and b = -1:
(X+5) (X-1)
The side lenghts of the rectangle will not have any sense if ≤ 0. With the factored expression:
(X+5) ≤ 0 ; If X ≤ -5, these side lengths has no sense.
Also:
(X-1) ≤ 0; If X ≤ 1, these side lengths has no sense.
Both expressions are resumed in:
If X ≤ 1, these side lengths has no sense.Answer Asap!
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XOXO Also giving out brainliest!
Answer:
AAS
Step-by-step explanation:
Question 3 The Schwarzschild metric is given by 2M 2M ds² -(₁-²M) di² + (1-²¹)- 1- dr² +r² (d0² + sin² 0 dó²). There are Killing vectors associated with time invariance and angular momen- tum invariance in the direction in this geometry leading to the conserved quantities e = (1-2) and l= r² sin² 0 dr From this one can derive an analog to the radial energy equation in Newtonian mechanics by orienting the coordinates so that the orbits are confined to the equatorial plane where 0 = π/2 and u = 0. One finds 2 1 dr + Veff (r) = E 2 dr (e²_ -1) where E = and Veft(r) = - + 2/²/²2 - Mp³². Further, for circular orbits one can show that M | [₁ + √/₁−12 (+1)]. r+= | 2M Finally, for circular orbits of radius R do 1/2 M dt R³ (a) Which value of r corresponds to the Schwarzschild radius of stable circular orbits: r or r? Justify your answer. [3 marks] (b) Show that for circular orbits of radius R do 1/2 M -1/2 3M (²) ¹² (1-³) dT R³ R where is the proper time. [6 marks] (c) A free particle is moving in a circular orbit around a spherical source of curvature of mass M. The Schwarzschild radius of the orbit is 8M. Use the equivalence principle to argue that the period as measured at infinity should be larger than that measured by the particle. [4 marks] (d) Find the period of the orbit as measured by an observer at infinity. Find the period of the orbit as measured by the particle. [7 marks] M
(A) Circular orbits of stable particles are possible at radii greater than three times the Schwarzschild radius for the non-rotating spherically symmetric mass.
This represents the radius of a black hole's event horizon, within which nothing can escape. The Schwarzschild radius is the event horizon radius of a black hole with mass M.
M can be calculated using the formula: r+ = 2Mwhere r+ is the radius of the event horizon.
(B) 1/2 M -1/2 3M (²) ¹² (1-³) dT = R³ R. This is the required expression.
Tau is the proper time of the particle moving around a circular orbit. Hence, by making use of the formula given above:1/2 M -1/2 3M (²) ¹² (1-³) dT = R³ dt.
(C) Time passes differently in different gravitational fields, and it follows that the period as measured at infinity should be larger than that measured by the particle.
The principle of equivalence can be defined as the connection between gravitational forces and the forces we observe in non-inertial frames of reference. It's basically the idea that an accelerating reference frame feels identical to a gravitational force.
(D) The period of the orbit as measured by an observer at infinity is 16π M^(1/2) and the period of the orbit as measured by the particle is 16π M^(1/2)(1 + 9/64 M²).
The period of orbit as measured by an observer at infinity can be calculated using the formula: T = 2π R³/2/√(M). Substitute the given values in the above formula: T = 2π (8M)³/2/√(M)= 16π M^(1/2).The period of the orbit as measured by the particle can be calculated using the formula: T = 2π R/√(1-3M/R).
Substitute the given values in the above formula: T = 2π (8M)/√(1-3M/(8M))= 16π M^(1/2)(1 + 9/64 M²).
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How do I know which triangles are similar to ABC?
Answer:
I'm not sure if my answer is correct but anyways.
Step-by-step explanation:
If you drew a triangle and labeled it, that would be easier to determine your answer. So, 145-10=135 and then i guess 145-135=10???
What is 20% of 50 and what would 10% equal
Answer:
20/100 x 50 is 10
10% would be 10/100 is fraction form
I want to help you on the first thing you said,
so always consider a percent as a fraction but there denominator is ALWAYS 100 (a way to remember that is that the word "cent" means 100). The word "of" means multiplication so that means your multiplying it with 50 and just do the multiplication.
I'm really hoping you understand!
shawna knows that a correlation between calories of sweeteners consumed and mortality rates among women does not, in itself, mean that drinking more soft drinks will lead to a higher chance of her dying. which of the following would not be a lurking variable in the above scenario? a.) shawna's weight b.) the time of day shawna exercises c.) the number of soft drink brands available for purchase d.) the amount of caffeine available in soft drinks
Answer: Musical preferences
A variable is a lurking variable if it can influence an explanatory/response relationship. So it must be related to both the explanatory and response variable. It is not likely your musical preferences affect mortality or how much sweetener you consume.
The number of soft drink brands available for purchase is not a lurking variable in this scenario. Correct option is C.
The statement is asking which of the given variables is not a lurking variable in the scenario where Shawna is considering the correlation between the calories of sweeteners consumed and the mortality rates among women, and is trying to determine whether drinking more soft drinks will lead to a higher chance of her dying.
A lurking variable is a variable that is not included in the analysis, but has an effect on the relationship between the variables being studied. In this case, the variables being studied are the calories of sweeteners consumed and the mortality rates among women, and the effect of drinking more soft drinks on the chances of dying.
Out of the given variables, the number of soft drink brands available for purchase would not be a lurking variable, as it does not have an effect on the relationship being studied.
Shawna's weight, the time of day she exercises, and the amount of caffeine available in soft drinks could all potentially have an effect on the relationship being studied, either as confounding variables or moderators.
For example, Shawna's weight could be a confounding variable, as it is associated with both sweetener consumption and mortality rates. The time of day she exercises could be a moderator, as exercise may affect the metabolism of sweeteners and caffeine, which could in turn affect mortality rates.
The amount of caffeine available in soft drinks could be a confounding variable, as caffeine consumption is associated with both sweetener consumption and mortality rates.
In summary, the number of soft drink brands available for purchase is not a lurking variable in this scenario, while Shawna's weight, the time of day she exercises, and the amount of caffeine available in soft drinks could potentially be confounding variables or moderators that need to be accounted for in the analysis.
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sin(n+2)A.cos(n+1)A-cos(n+2)A.sin(n+1)A=sinA
Answer:
Step-by-step explanation:
Instead of theeta let us take A.
LHS =(T3 - T5)/T1
= {(sin^3 A+cos^3 A) - (sin^5 A+cos^5 A) /(sin A+ cos A)
= (sin^3 A-sin^5 A +cos^3 A-cos^5 A) / (sin A + cosA)
=sin^3 A(1-sin^2A) + cos^3 A(1-cos^2 A) / (sinA+cosA)
= (sin^3 Acos^2 A + cos^3 A.sin^2 A) / (sinA+cosA)
=sin^2A.cos^2A(sinA+cosA)/(sinA+cosA)
= sin^2 A.cos^2 A. ……..(1)
RHS = (T5-T7)/T3 =
{(sin^5 A+cos^5 A) - (sin^7 A+ cos^7 A) / (sin^3 A+ cos^3 A)
=(sin^5 A - sin^7 A + cos^5 A - cos^7 A) / (sin^3 A + cos^3 A)
={sin^5 A(1-sin^2 A)+cos^5 A(1-cos^2 A)} / (sin^3 A + cos^3 A)
=(sin^5 A.cos^2 A + cos^5 A.sin^2 A) / (sin^3 A + cos^3 A)
=sin^2 A.cos^2 A(sin^3 A + cos^3 A) / (sin^3 A + cos^3 A)
= sin^2 A.cos^2 A ….(2)
From (1) and (2) LHS = RHS
Using the findings (e.g., themes) from a qualitative study to develop a new quantitative survey is known as what type of integration
Using the findings from a qualitative study to develop a new quantitative survey is known as mixed integration.
Mixed integration is called the data collection and information classification system that includes both qualitative and quantitative processes as access mechanism to said data and information, that is, performing a mixed or dual analysis of the concepts being studied.
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researchers typically report the adjusted r-square value because they lack confidence in the actual r-square.
T/F
Answer: False
Step-by-step explanation:
Researchers typically report the adjusted R-squared value in addition to the regular R-squared value, not because they lack confidence in the actual R-squared, but because the adjusted R-squared provides additional information about the goodness of fit of a statistical model. The regular R-squared value measures the proportion of the variance in the dependent variable that is explained by the independent variables in the model. However, it can be biased and increase as more predictors are added to the model, even if the additional predictors do not contribute significantly to the prediction.
The adjusted R-squared, on the other hand, takes into account the number of predictors in the model and penalizes the addition of irrelevant predictors. It provides a more conservative measure of the goodness of fit by adjusting for the number of predictors and the sample size. Researchers often use the adjusted R-squared to evaluate and compare different models with varying numbers of predictors or to assess the overall explanatory power of a model while considering its complexity.
In summary, researchers report the adjusted R-squared value to address the limitations of the regular R-squared and to provide a more accurate assessment of the model's goodness of fit.
A
the angle of elevation from point a to the top of a hill is 499.
if point a is 400 feet from the base of the hill, how high is
the hill?
a4
49
Answer:
899 ft
Step-by-step explanation:
if point a is 400 feet from the base and 499 feet away from the top you would need to add 400+499 together to get 899
Twice the sum of a number and -6 equals -6 times the sum of the number and 4. Let n stand for the number. Solve for n.
Answer:
n = -18/7
Step-by-step explanation:
Represent the number with n.
Then:
n - 6 = -6(n + 4)
Performing the indicated multiplication, we get:
n - 6 = -6n - 24
Combining like terms results in 7n = -18, so n = -18/7
12 customers entered a store over the course of 2 minutes. At what rate were the
customers entering the store in minutes per customer?
Answer:
.16
Step-by-step explanation:
if you divide 2 min into 12 it's going to give you the rate which is .1666666667 and just say .16 each person
Haley is shipping these cubes in a wooden box. The inside measurements of the box are shown. Haley will put as many cubes in the box as possible. She wants to be able to close the box using a lid. What is the greatest number of cubes that Haley can fit in the box and still be able to close the lid? Show or explain how you got your answer.
The greatest number of 4 cm cubes that Haley can fit in the box and still be able to close the lid is 6.
First, we need to determine the dimensions of the box in terms of the length of a side of a cube. We can do this by finding the smallest dimension of the box and dividing it by the length of the side of a cube.
The smallest dimension of the box is the height, which is 6 cm. Therefore, the length of the side of a cube must be a factor of 6.
The length and width of the box are both 8 cm, so the length of the side of a cube must be less than or equal to 8 cm.
We can check the factors of 6 to find the largest possible size of the cube that can fit in the box:
A cube with side length 6 cm would fit in the box, but the lid would not be able to close.
A cube with side length 4 cm would fit in the box, and the lid would be able to close, so this is the largest size cube that can fit in the box.
To determine how many 4 cm cubes can fit in the box, we need to find the volume of the box and divide by the volume of a single cube. The volume of the box is:
V_box = length x width x height
V_box = 8 cm x 8 cm x 6 cm
V_box = 384 cm³
The volume of a single 4 cm cube is:
V_cube = side length³
V_cube = 4 cm x 4 cm x 4 cm
V_cube = 64 cm³
Dividing the volume of the box by the volume of a single cube gives us the maximum number of cubes that can fit in the box:
384 / 64 = 6
Therefore, the greatest number of 4 cm cubes that Haley can fit in the box and still be able to close the lid is 6.
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How do you prove a contrapositive?
Answer:
Step-by-step explanation:
A contrapositive is a logical equivalent of the original statement that has the opposite direction and negated conclusion. It can be proven by using the following steps:
Start with the original statement in the form of "If P, then Q".
Negate both the hypothesis (P) and the conclusion (Q) of the original statement.
Conjoin the negated hypothesis and the negated conclusion to form a new statement.
Show that the contrapositive is logically equivalent to the original statement, meaning that it has the same truth value as the original statement for all possible cases.
For example, consider the statement: "If it rains, the roads will be wet." The contrapositive of this statement is "If the roads are not wet, it did not rain." To prove the contrapositive, we can use the following steps:
Start with the original statement "If it rains, the roads will be wet."
Negate both the hypothesis and the conclusion: "It does not rain" and "The roads are not wet".
Conjoin the negated hypothesis and the negated conclusion: "It does not rain and the roads are not wet."
Show that the contrapositive is logically equivalent to the original statement by considering all possible cases:
If it rains, the roads will be wet (as stated in the original statement), and the contrapositive "It does not rain and the roads are not wet" is false.
If it does not rain, the roads will not be wet (as stated in the contrapositive), and the original statement "If it rains, the roads will be wet" is false.
This shows that the contrapositive is logically equivalent to the original statement, and we can use it to draw the same conclusion with a different proof.
the Venn diagram is shown below
n(A), n(B) and n(AnB) are given and n(AUB)'s complement is asked.
Please help with this question!!!!
Answer:
what is your question ?
Step-by-step explanation:
The product of 3! isA 1B 2.C 3D 6
Recall that n factorial is equal to
\(n!=n\times(n-1)\times(n-2)\ldots\times1\)Therefore, 3!
\(3!=3\times2\times1=6\)Why is i squared equal to 1?
The square root of -1 is the definition of i. A square root is squared to eliminate the two and leave the original number.
Given that,
We have to find why i squared is equal to negative 1.
We know that,
The imaginary numbers are denoted as i.
We occasionally obtained negative integers in equations when using the radican (square root) symbol to solve them. When they realized this, some would halt and respond, "no actual solution," which is technically accurate. We can further simplify radicals by using the imaginary number I which is the square root of real numbers. We occasionally even manage to get rid of the fictitious element, which provides us with actual solutions.
The square root of -1 is the definition of i. A square root is squared to eliminate the two and leave the original number.
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12,434.4 round nearest whole number
Answer:
12,434
Step-by-step explanation:
since after the decimal point the number ranges 0-4 it will nullify but if 5-9 it will add 1 to the number before the point
100 - [5 x (3 + 4)] how does this equal 65
Now we have to,
→ prove that 100 - [5 × (3 + 4)] = 65.
Let's solve the problem,
→ 100 - [5 × (3 + 4)] = 65
→ 100 - [5 × 7] = 65
→ 100 - 35 = 65
→ 65 = 65
→ LHS = RHS
Hence, proved the equation.
An exterior angle and the interior angle of a regular polygon added pressure toast to 7 find the number of sides of the polygon
Step-by-step explanation:
I hope this answer is helpful ):
For the dinner special at a restaurant, the customer must choose an appetizer, an entree, a side dish, and a dessert.
Here are the items to choose from.
Choice
Possible items
Appetizer
Shrimp cocktail, Onion rings, Buffalo wings
Entree
Grilled chicken, Lamb, Roast turkey, Salmon
Side dish
French fries, Baked potato, Mixed vegetables, Rice, Pinto beans
Dessert
Brownies, Ice cream, Cheesecake, Apple pie
How many dinner specials are possible?
Answer:
A
Step-by-step explanation:
Answer:
320
Step-by-step explanation:
which of the following lines are parallel.
Lines a and b
lines a and c
Lines b and c
The lines which are parallel are none.
What is the slope?The slope is the ratio of the vertical changes to the horizontal changes between two points of the line.
m = ( y₂ - y₁ ) / ( x₂ - x₁ )
where (x₁, y₁) and (x₂, y₂) are the two points that you are trying to find the slope between.
Given;
Coordinates of three lines
a;(1,5) and (-2,-4)
b;(3,2) and (1,-4)
c;(6,1) and (-4,2)
Now, slopes of the lines
a= -4-5/-2-1
=10/3
b=-4-2/1-3
=-3
c=2-1/-4-6
=1/-10
Therefore, by slopes of the line none of them are parallel.
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is rap music more popular among young blacks than among young whites? a sample survey compared 634 randomly chosen blacks aged 15 to 25 with 567 randomly selected whites in the same age group. it found that
Answer:
Step-by-step explanation:
Rap music is generally more popular with young blacks than young whites, during the 80s-90s when rap was becoming more popular with artists such as 2pac, BIG, Dr. Dre, etc they were more popular among young blacks than whites
Stacy spent £20 on ingredients for bread.
She made 15 loaves and sold them for £1.80 each.
Calculate her percentage profit.
Answer:
35%
Step-by-step explanation:
Total made: (15)(1.80) = £27
\(\frac{27-20}{20} \times 100=35\%\)
Analyze the proportion below and complete the instructions that follow.
2x+5 x-5
3
4
Solve the proportion for x
A. -7
B. -4
C-2
D. -1
Answer:
A
Step-by-step explanation:
Given point Q equals negative 5 comma negative 5 radical 3 in rectangular coordinates, what are the corresponding polar coordinates?
The corresponding polar coordinates are (10, 2π/3). Option B
How to determine the valueFrom the information given, we have;
(-5, 5√3)
Given that the polar coordinates are represented as;
r = √(x² + y²)
θ = arctan(y / x)
We get;
\(r = \sqrt{(-5)^2} + (\sqrt{5} /3)^2\)
Find the value of square, we have;
r = \(\sqrt{25 + 75}\)
Add the values, we get;
r = \(\sqrt{100}\)
Find the square root
r = 10
To determine the value of theta, we get;
θ = arctan((-5√3) / -5)
Divide the values, we have;
θ = arctan(√3)
θ = 60 degrees
Then, we have; (10, 2π/3)
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Your company obtained a standard reference material for avobenzone from the FDA that contains 0.250mg avobenzone per gram sunscreen. Your working group is creating a new method for detecting avobenzone in sunscreen. You analyze the standard and find it contains 0.256,0.279,0.328,0.305,0.312 and 0.230ug/g of avobenzone. You need to present your findings to your supervisor. Is your new method valid/accurate for the detection of avobenzone in sunscreen at a 95\% confidence level? (show all of your work)
Yes, the new method for detecting avobenzone in sunscreen is valid/accurate at a 95% confidence level.
The standard reference material provided by the FDA contains 0.250 mg of avobenzone per gram of sunscreen. The working group analyzed the standard and obtained measurements of avobenzone content in six samples, which were found to be 0.256, 0.279, 0.328, 0.305, 0.312, and 0.230 µg/g.
To determine the validity and accuracy of the new detection method, we need to assess if the measurements obtained from the samples are within an acceptable range of the known avobenzone content provided by the standard.
At a 95% confidence level, we can calculate a confidence interval to evaluate the accuracy of the new method. The confidence interval is a range within which we can reasonably expect the true avobenzone content of the sunscreen samples to fall. If the known avobenzone content provided by the standard falls within this confidence interval, it indicates that the new method is valid and accurate.
By performing the necessary calculations, we can determine the confidence interval. Comparing the range of the measurements obtained from the samples (0.230 to 0.328 µg/g) with the known avobenzone content provided by the standard (0.250 mg/g), we find that the measurements overlap with the known value. Therefore, we can conclude that the new method is valid/accurate for the detection of avobenzone in sunscreen at a 95% confidence level.
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What is an equation of the line that passes through the points (-6, -3) and
(-8,-4)
Answer:
Equation is Y=x/2
Step-by-step explanation:
Find the gradient of the line : graduent= -4-(-3)÷ -8-(-6) which = to 1\2Sustitutes any of the values of y and x coordinates and your gradient in order to find the value of c: Y =mx + c : (-4)=1/2(-8) + c then C =OY=x/2