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Ghella [55]
4 years ago
13

2r + st^2 - u, if r = 4, s = 6, t = 3, and u = 12

Mathematics
2 answers:
elena55 [62]4 years ago
7 0
Answer:

50

Step-by-step explanation:

2r + st^2 - u
2(4) + (6)(3)^2 - (12)
(8) + (6)(9) - (12)
(8) + (54) - (12)
62 - 12
50

Final answer: 50
gtnhenbr [62]4 years ago
3 0

Answer:

320

Step-by-step explanation:

r = 4, so 2 x 4 = 8.

s = 6 and t = 3, so 6 x 3 = 18. 18 squared is 324.

u = 12, so 8 + 324 - 12, which equals 320.

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4 years ago
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Fynjy0 [20]

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3 0
4 years ago
Select all the true statements. Triangle A B C where the measure of angle A is 2 x plus 1 degree, angle B is x degrees, and angl
Step2247 [10]

Answer:

B= 41; C  = 56; A = 83

Step-by-step explanation:

Given

A = 2x + 1

B = x

C = x + 15

Required

Arrange the angles from smallest to largest

First, we need to determine the value of x.

Since, it is a triangle:

A + B + C = 180

Substitute values for A, B and C

2x + 1+ x + x + 15 = 180

Collect Like Terms

2x + x + x = 180 - 15 -1

4x = 164

Solve for x

x= 164/4

x= 41

Solve for A, B and C

A = 2x + 1

A = 2 * 41 + 1

A = 82 + 1

A = 83

B = x

B= 41

C = x + 15

C  = 41 + 15

C  = 56

From Smallest to Largest, we have:

B= 41; C  = 56; A = 83

6 0
3 years ago
Which critical value is appropriate for a​ 99% confidence level where nequals​17, sigma is​ unknown, and the population appears
My name is Ann [436]

Answer:

t Subscript alpha divided by 2 = 2.921

Step-by-step explanation:

With sample sizes lower than 30, we use the t-test.

Otherwise, we use the z-test.

Here, n = 17

So we use the t-test.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 17 - 1 = 16

Now, we have to find a value of T, which is found looking at the t table, with 16 degrees of freedom(y-axis) and a confidence level of 0.99(t_{1 - (\frac{1-0.99}{2}}) = 0.995). So we have T = 2.921

So the correct answer is:

t Subscript alpha divided by 2 = 2.921

6 0
4 years ago
Read 2 more answers
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