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3 years ago

40 POINTS! HELP! ASAP!

1 answer:

7 0

What is the greatest common factor of the expression 63r^2t^3+42r^3t^5
Question 4 options:
10r^3t^5
21r^2t^3
7r^2t^3
3r^5t^8

Answer is 21r^2t^3

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If the vehicles are divided evenly between the sections, how many vehicles are in each section?

solmaris [256]

That would depend on how many vehicles there are. The question is not complete.

5 0

3 years ago

lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll

aksik [14]

Answer:

x = 28°

Explanation:

m || n

|| means parallel lines.

x = 28°

<u>reason</u>:

Alternate interior angles, so has same angle measure.

5 0

1 year ago

Read 2 more answers

Solve the equation 3(x + 1) − 2 = x + 5. Question 12 options: x = 2 x = 3 x = 4 x = 3.5

svlad2 [7]

x = 2

Step-by-step explanation:

3(x + 1) - 2 = x + 5

3x + 3 - 2 = x + 5

3x + 1 = x + 5

3x - x = 5 - 1

2x = 4

x = 4 / 2

x = 2

6 0

2 years ago

Daniel wants to by cookies for her new freind the radius of a cookie is 5 inches what is the distance around the cookie

lapo4ka [179]

Answer: Is it 31.4?

Step-by-step explanation:

5x2= 10 and 10 x 3.14= 31.4

(if by distances around you mean circumfernece)

7 0

3 years ago

Consider the following hypothesis test. : : The following results are for two independent samples taken from two populations. Ex

I am Lyosha [343]

Answer:

$z = -1.53$ --- test statistic

$p = 0.1260$ --- p value

Conclusion: Fail to reject the null hypothesis.

Step-by-step explanation:

Given

$n_1 = 80$ $\bar x_1= 104$ $\sigma_1 = 8.4$

$n_2 = 70$ $\bar x_2 = 106$ $\sigma_2 = 7.6$

$H_o: \mu_1 - \mu_2 = 0$ --- Null hypothesis

$H_a: \mu_1 - \mu_2 \ne 0$ ---- Alternate hypothesis

$\alpha = 0.05$

Solving (a): The test statistic

This is calculated as:

$z = \frac{\bar x_1 - \bar x_2}{\sqrt{\frac{\sigma_1^2}{n_1} + \frac{\sigma_2^2}{n_2} }}$

So, we have:

$z = \frac{104 - 106}{\sqrt{\frac{8.4^2}{80} + \frac{7.6^2}{70} }}$

$z = \frac{104 - 106}{\sqrt{\frac{70.56}{80} + \frac{57.76}{70}}}$

$z = \frac{-2}{\sqrt{0.8820 + 0.8251}}$

$z = \frac{-2}{\sqrt{1.7071}}$

$z = \frac{-2}{1.3066}$

$z = -1.53$

Solving (b): The p value

This is calculated as:

$p = 2 * P(Z < z)$

So, we have:

$p = 2 * P(Z < -1.53)$

Look up the z probability in the z score table. So, the expression becomes

$p = 2 * 0.0630$

$p = 0.1260$

Solving (c): With $\alpha = 0.05$ , what is the conclusion based on the p value

We have:

$\alpha = 0.05$

In (b), we have:

$p = 0.1260$

By comparison:

$p > \alpha$

i.e.

$0.1260 > 0.05$

So, we fail to reject the null hypothesis.

4 0

2 years ago