Answer:
4/5
Step-by-step explanation:
rise over run, up 4 over 5
the sides of a triangle are 13ft 15ft and 11 ft find the measure of the angle opposite the longest side
The measure of the angle opposite the longest side is approximately 56.32 degrees.The measure of the angle opposite the longest side of a triangle can be found using the Law of Cosines.
In this case, the sides of the triangle are given as 13 ft, 15 ft, and 11 ft. To find the measure of the angle opposite the longest side, we can apply the Law of Cosines to calculate the cosine of that angle. Then, we can use the inverse cosine function to find the actual measure of the angle.
Using the Law of Cosines, the formula is given as:
\(c^2 = a^2 + b^2 - 2ab * cos(C)\)
Where c is the longest side, a and b are the other two sides, and C is the angle opposite side c.
Substituting the given values, we have:
\(13^2 = 15^2 + 11^2 - 2 * 15 * 11 * cos(C)\)
169 = 225 + 121 - 330 * cos(C)
-177 = -330 * cos(C)
cos(C) = -177 / -330
cos(C) ≈ 0.5364
Using the inverse cosine function, we find:
C ≈ arccos(0.5364) ≈ 56.32 degrees
Therefore, the measure of the angle opposite the longest side is approximately 56.32 degrees.
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What is the equation of the vertical line through -8, 5
Answer:
The answer of the following questions is y=3x-19
50 points
Write the equation of the line in slope-intercept form (picture here)
Answer:
\(f(x)=\frac{1}{2}x+-6\) or y=1/2x+-6
Step-by-step explanation:
You can use any two points on a line to find slope. For example, I used:
(x1, y1) 2, -5
(x2, y2) 4, -4
To find slope, the following formula is needed:
\(m=\frac{y_2-y_1}{x_2-x_1}\)
Input our values:
\(m=\frac{(-4)-(-5)}{4-2}\) which means m=1/2
b is equal to y-intercept which is -6
The equation is:
\(y=\frac{1}{2}x+-6\)
to get the equation of any straight line, we simply need two points off of it, let's use the points from the picture below.
\((\stackrel{x_1}{-4}~,~\stackrel{y_1}{-8})\qquad (\stackrel{x_2}{4}~,~\stackrel{y_2}{-4}) \\\\\\ \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{-4}-\stackrel{y1}{(-8)}}}{\underset{run} {\underset{x_2}{4}-\underset{x_1}{(-4)}}} \implies \cfrac{-4 +8}{4 +4} \implies \cfrac{ 4 }{ 8 }\implies \cfrac{1}{2}\)
\(\begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{(-8)}=\stackrel{m}{\cfrac{1}{2}}(x-\stackrel{x_1}{(-4)}) \implies y +8= \cfrac{1}{2} (x +4) \\\\\\ y+8=\cfrac{1}{2}x+2\implies {\LARGE \begin{array}{llll} y=\cfrac{1}{2}x-6 \end{array}}\)
PLEASE HELP!!!!!!!
Find the Volume of the sphere rounded to the nearest hundredth
Answer:
14130 yd^3
Step-by-step explanation:
The volume of a sphere is
V = 4/3 pi r^3
The diameter is 30 so the radius is d/2 = 30/2 = 15
V = 4/3 pi (15)^3
V = 4500 pi
Letting pi = 3.14
V = 14130 yd^3
Answer:
Last one
Step-by-step explanation:
The volume of the sphere is given by the relation:
V = \(\frac{4}{3}\)*π*r³ r is the radius wich is here 30/2 = 15V= \(\frac{4}{3}\) *π* 15³
V= 14137.166 yd³
wich is approximatively 14130yd³
Giving brainliest! Please show the working out
Answer:
see explanation
Step-by-step explanation:
(a)
OC = OB ( both radii of the circle )
Thus Δ BOC is isosceles with congruent base angles.
∠ BOC = ∠ BCO = 50°
(b)
∠ ACB = 90° ( angle in a semicircle ), then
∠ ACO = 90° - 50° = 40°
OA = OC ( both radii of the circle )
Thus Δ ACO is isosceles with congruent base angles.
∠ BAC = ∠ ACO = 40°
The sales tax in Texas is 8.25% and an item costs $400. How much is
the tax?
Answer:
Step-by-step explanation:
400*8.25%= $33 tax
a
2.1 cm
2.9 cm
Find the value of a.
Step-by-step explanation:
\(a = \sqrt{ {2.9}^{2} - {2.1}^{2} } = \\ = \sqrt{8.41 -4.41 } = \\ \sqrt{4 } = 2\)
4x +16 x+4
Simplify your answer as much as possible.
Answer:
20x+4
Step-by-step explanation:
The straight line y = mx + c lies on the right side of y-axis if a. c = 0 b. c = -1 c. c>0 d. c<0
Convert the fraction or mixed number to a percent.
6 3/5
Answer:
660%
Step-by-step explanation:
6 x 100= 600%
3/5 = 0.6 × 100 = 60%
600% + 60% = 660%
the first term of a sequence is 2005. each succeeding term is the sum of the cubes of the digits of the previous term. what is the 2005th is term of the sequence? (a) 29 (b) 55 (c) 85
The 2005th term of the sequence is 55.
Given information,
The first term of a sequence is 2005.
It states that each succeeding term is the sum of the cubes of the digits of the previous term, then the 2005th term is;
First term = 2005
Second term = 2³ + 0³ + 0³ + 5³ = 8 + 0 + 0 + 125 = 133
Third term = 1³ + 3³ + 3³ = 1 + 27 + 27 = 55
Fourth term = 5³ + 5³ = 125 + 125 = 250
Fifth term = 2³ + 5³ + 0³ = 133
As we see the number obtained repeating, the 2005th term will be 55.
Hence, the 2005th term of the sequence is 55.
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A bolt manufacturer is very concerned about the consistency with which his machines produce bolts. The bolts should be 0.2 centimeters in diameter. The variance of the bolts should be 0.025. A random sample of 15 bolts has an average diameter of 0.21 cm with a standard deviation of 0.1587. Can the manufacturer conclude that the bolts vary by more than the required variance at α=0.01 level? Step 1 of 5: State the hypotheses in terms of the standard deviation. Round the standard deviation to four decimal places when necessary. A bolt manufacturer is very concerned about the consistency with which his machines produce bolts. The bolts should be 0.2 centimeters in diameter. The variance of the bolts should be 0.025. A random sample of 15 bolts has an average diameter of 0.21 cm with a standard deviation of 0.1587. Can the manufacturer conclude that the bolts vary by more than the required variance at α=0.01 level? Step 2 of 5: Determine the critical value(s) of the test statistic. If the test is twotailed, separate the values with a comma. Round your answer to three decimal places. A bolt manufacturer is very concerned about the consistency with which his machines produce boits. The bolts should be 0.2 centimeters in diameter. The variance of the boits should be 0.025. A random sample of 15 bolts has an average diameter of 0.21 cm with a standard deviation of 0.1587. Can the manufacturer conclude that the bolts vary by more than the required variance at α=0.01 level?
To determine if the bolts vary by more than the required variance, we can conduct a hypothesis test. The null hypothesis (H₀) states that the variance of the bolts is equal to or less than the required variance (σ² ≤ 0.025), while the alternative hypothesis (H₁) states that the variance is greater than the required variance (σ² > 0.025).
Next, we need to determine the critical value(s) of the test statistic. Since we are testing for variance, we will use the chi-square distribution. For a one-tailed test with α = 0.01 and 14 degrees of freedom (n-1), the critical value is 27.488.
Now, we can compare the test statistic to the critical value. The test statistic is calculated as (n-1) * s² / σ², where n is the sample size (15), s² is the sample variance (0.1587²), and σ² is the required variance (0.025).
If the test statistic is greater than the critical value, we reject the null hypothesis and conclude that the bolts vary by more than the required variance. Otherwise, we fail to reject the null hypothesis.
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To determine if the bolts vary by more than the required variance, we can conduct a hypothesis test. The null hypothesis (H₀) states that the variance of the bolts is equal to or less than the required variance (σ² ≤ 0.025), while the alternative hypothesis (H₁) states that the variance is greater than the required variance (σ² > 0.025).
Next, we need to determine the critical value(s) of the test statistic. Since we are testing for variance, we will use the chi-square distribution. For a one-tailed test with α = 0.01 and 14 degrees of freedom (n-1), the critical value is 27.488.
Now, we can compare the test statistic to the critical value. The test statistic is calculated as (n-1) * s² / σ², where n is the sample size (15), s² is the sample variance (0.1587²), and σ² is the required variance (0.025).
If the test statistic is greater than the critical value, we reject the null hypothesis and conclude that the bolts vary by more than the required variance. Otherwise, we fail to reject the null hypothesis.
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Enter your answer and show all the steps that you use to solve this problem in the space provided.
Use the order of operations to find the value of the expression.
5 x 2 + 6 - 5
I will be giving brainliest and 15 points so if you get this correct then you have a suprise coming! Thank you to whoever answers this question as well.
Answer:
11
Step-by-step explanation:
5 x 2 = 10
10 + 6 = 16
16 - 5 = 11
there u go!
Find c if m A = 70.6°, b = 10.4 in
Answer:
its 7.8
Step-by-step explanation:
The three angles of a quadrilateral are 55,73,105 what is the fourth angle
Answer:
127°
Step-by-step explanation:
In a quadrilateral, sum of four angles is 360°.
Consider the fourth angle x.
so,
55° + 73° + 105° + x = 360°
x = 360° - 233°
x = 127°
PLEASE HELP!!!!!
The probability of drawing a green marble from a marble bag is 20%. What are the odds in favor of drawing a green marble?
A. 1:4
B. 5:1
C. 1:5
D. 4:1
Answer:
C. 1:5
Step-by-step explanation:
Lourdes has created the following challenges for you: She has given you three of the four points necessary to determine a rectangle on graph. She wants you to find the points that "complete" each of the rectangles below
a.(-1,3) (-1,2) (9,2) b.(3,7) (5,7) (5,-3)
c.(-5,-5) (1,4) (4,2) d.(-52,73) (96,73) (96,1483)
Answer:
Plot each point, connect in the given order, add parallel line segments to those already there, take the coordinates of the intersection and record as answer.
a) (-1,3), (-1,2), (9,2)
Missing point is (9, 3)b) (3,7), (5,7), (5,-3)
Missing point is (3, -3)c) (-5,-5), (1,4), (4,2)
Missing point (-2, -7)d) (-52,73), (96,73), (96,1483)
Missing point (-52, 1483)See attached
a bag holds 6 tiles: 2 lettred and 4 numbered. without looking, chose a tile. what is the probability of drawing a number
Answer: 0.66 (repeating)
Step-by-step explanation:
2/3 is equivalent to 4/6 and 2/3 is 0.66 repeating
Eddie and Janice are buying school supplies. Eddie buys 5 notebooks and 6 binders for a total of $25.45. Janice buys 4 notebooks and 8 binders for $30.60. What is the cost of each item?
Step-by-step explanation:
shmskustj gkxyla5j xydky
I need help factor the following expression using the steps in the table show all work!!!1. Find the GCF!2. Write your GCF3. Rewrite expression factor out the GCF!4. Write down your final factored expression! NUMBER 10
Given the expression:
\(5x+25\)We proceed as follows:
*GCF = 5
Now, we rewrite:
\(5(x+5)\)If we factor "out" the GCF we would get (x+5) and the final factored expression is 5(x+5)
Solve each system. 3x+y=5 -x+y=2
The solution to the system of equations is x = 3/4 and y = 11/4.
To solve the system of equations:
1) 3x + y = 5
2) -x + y = 2
We can use the method of substitution or elimination. Let's use the elimination method in this case:
Adding equation (1) and equation (2) eliminates the y variable:
(3x + y) + (-x + y) = 5 + 2
3x - x + y + y = 7
2x + 2y = 7
Now we have a new equation:
3) 2x + 2y = 7
We can solve equations (2) and (3) as a new system:
2x + 2y = 7
-x + y = 2
To eliminate the x variable, let's multiply equation (2) by 2:
-2x + 2y = 4
Now we have a new equation:
4) -2x + 2y = 4
Now we can subtract equation (4) from equation (3) to eliminate the y variable:
(2x + 2y) - (-2x + 2y) = 7 - 4
2x + 2y + 2x - 2y = 3
4x = 3
x = 3/4
Substituting the value of x back into equation (2):
-x + y = 2
-(3/4) + y = 2
y - 3/4 = 2
y = 2 + 3/4
y = 11/4
Therefore, the solution to the system of equations is:
x = 3/4
y = 11/4
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Let F(x) be an antiderivative of (ln x)^3/x. If F(1) = 0, then F(9) =
a. .048
b. .144
c. 5.827
d. 23. 308
e. 1,640.250
the value of F(9) is approximately 23.308.
To find the value of F(9) given that F(x) is an antiderivative of (ln x)^3/x and F(1) = 0, we can use the fundamental theorem of calculus.
According to the fundamental theorem of calculus, if F(x) is an antiderivative of a function f(x), then:
∫[a,b] f(x) dx = F(b) - F(a)
Since F(1) = 0, we can write:
∫[1,9] (ln x)^3/x dx = F(9) - F(1)
To evaluate the integral, we can make a substitution:
Let u = ln x, then du = (1/x) dx
The integral becomes:
∫[ln 1, ln 9] u^3 du
Integrating u^3 with respect to u:
[(1/4)u^4] | [ln 1, ln 9] = (1/4)(ln 9)^4 - (1/4)(ln 1)^4
Since ln 1 = 0, we have:
(1/4)(ln 9)^4 - (1/4)(ln 1)^4 = (1/4)(ln 9)^4
Therefore, F(9) - F(1) = (1/4)(ln 9)^4
Since F(1) = 0, we can conclude that F(9) = (1/4)(ln 9)^4.
Calculating this value:
F(9) = (1/4)(ln 9)^4 ≈ 23.308
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Find the perimeter of the trapezoid with these vertices. (4,6) (-2,6) (4, -1) (1, -1)
To find the perimeter of the trapezoid with the given vertices (4,6), (-2,6), (4, -1), and (1, -1), we need to calculate the sum of the lengths of its four sides.
To find the lengths of the sides, we can use the distance formula, which calculates the distance between two points in a coordinate plane. The distance formula is given by the equation: distance = sqrt((x2 - x1)^2 + (y2 - y1) ^2).
Using the distance formula, we can calculate the lengths of the sides:
Side AB: (4,6) to (-2,6)
distance = sqrt ((-2 - 4) ^2 + (6 - 6) ^2) = sqrt (36 + 0) = 6 units
Side BC: (-2,6) to (4, -1)
distance = sqrt ((4 - (-2)) ^2 + (-1 - 6) ^2) = sqrt (36 + 49) = sqrt (85) units
Side CD: (4, -1) to (1, -1)
distance CD = sqrt ((1 - 4) ^2 + (-1 - (-1)) ^2) = sqrt (9 + 0) = 3 units
Side DA: (1, -1) to (4,6)
distance _DA = sqrt ((4 - 1) ^2 + (6 - (-1)) ^2) = sqrt (9 + 49) = sqrt (58) units
Finally, to find the perimeter, we sum up the lengths of all four sides:
perimeter = distance _AB + distance _BC + distance _CD + distance _DA
perimeter = 6 + sqrt (85) + 3 + sqrt (58) units.
Therefore, the perimeter of the trapezoid with the given vertices is 6 + sqrt (85) + 3 + sqrt (58) units.
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Solve kx + 10 = 7 for x.
Answer: \(x=\frac{-3}{k}\)
Step-by-step explanation:
To solve for x, you need to get x alone. In this problem, k is a constant.
\(kx=-3\)
\(x=\frac{-3}{k}\)
what is the maximum number of 2/0 awg thw aluminum compact conductors permitted in a 21/2-inch pvc conduit, schedule 80?
To determine the maximum number of 2/0 AWG THW aluminum compact conductors permitted in a 2½-inch PVC conduit, Schedule 80, we need to consult the applicable electrical code or standards.
The number of conductors allowed in a conduit is typically governed by factors such as fill capacity and heat dissipation.
The specific requirements may vary depending on the jurisdiction and the electrical code being followed. It is recommended to consult the local electrical code or a qualified electrician to ensure compliance with the regulations in your area.
They will be able to provide the precise guidelines and restrictions for conductor fill capacity based on the conduit size, type, and the specific application.
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Question 2(Multiple Choice Worth 2 points)
(01.03)
Solve for x, given the equation √x+9 -4 = 1.?
Answer:
x = 16
Step-by-step explanation:
help pleaseee!!!!!!!
Answer:
3*4 = 12 volume = 96
length*width*height
4*3*X=96
12*x=96
1/12 * 12X= 96 * 1/12
x=96/12
x= 8
please help me out with this equation!
i will mark you as brainliest
Answer:
A)-19,15,-9,-1,9
Step-by-step explanation:
that's the answer when I compute it
===================================================
Explanation:
If we plug in x = -2, then we get,
y = x^2 + 7x - 9
y = (-2)^2 + 7(-2) - 9
y = 4 - 14 - 9
y = -10 - 9
y = -19
So x = -2 leads to y = -19. The answer is between A and D.
---------
If you repeat those steps for x = -1, then you should get y = -15
Then x = 0 leads to y = -9
x = 1 leads to y = -1
Finally, x = 2 leads to y = 9
The outputs we get are: -19, -15, -9, -1, 9 which is choice A
Choice D is fairly close, but we won't have a second copy of -15, and we don't have an output of -19.
how do you find the domain and range of a continuous graph???
Answer:
So, when talking about continuous functions, we're dealing with a function/graph that goes on and on to infinity. It never ends. In a case like this, we must define domain and range. Domain is all input values, while range goes the same but it's the output values. With this information, the domain and range on a continues graph would most likely be all real numbers due to the fact of the graph never ending, and that means the graph would have every input value thus making its domain/range infinite as well.
➲ Hope this helps.
How many square roots does the number 20 have 0 1 or 2
Answer:
Every positive real number has TWO square roots; One is positive and one is negative. They are opposites of each other.
Step-by-step explanation:
So the number 20 has 2