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3 years ago

What is the volume of a 2 by 4 by 8 rectangular prism?

Mathematics

1 answer:

Vladimir79 [104]3 years ago

3 0

Answer:

64 squared units

Step-by-step explanation:

2 x 4 x 8 = 64

Hope it's correct

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Find the inverse of the function y = 2x2 + 2.

Blababa [14]

Answer:

y = √(x - 2) / 2

Step-by-step explanation:

y = 2x^2 + 2.....switch ur x and y and solve for y

x = 2y^2 + 2

x - 2 = 2y^2 ...divide both sides by 2

(x - 2) / 2 = y^2...now take the sqrt of both sides, eliminating the ^2

(√ (x - 2) / 2) = y

3 0

3 years ago

Read 2 more answers

PLEASE HELP (the picture has the problem)

leva [86]

Brother is so easy all you have to do is divide 12 by 18 and and use the value to x 13.5 and voila answer is c) 9 :D

5 0

2 years ago

Read 2 more answers

4^4*4^10 4^14 4^6 4^40 4^10

kakasveta [241]

4^14

If you are multiplying terms with the same base (in this case 4), you add the exponents.

7 0

3 years ago

at Southside middle School 40% of the students play an instrument there are 305 students how many students play an instrument op

zvonat [6]

Answer: D.

Step-by-step explanation:

Can it help you.

7 0

3 years ago

The speeds of vehicles traveling on a highway are normally distributed with a population standard deviation of 7 miles per hour

True [87]

Answer: $(56.03\ ,63.97)$

Step-by-step explanation:

Given : The speeds of vehicles traveling on a highway are normally distributed .

Standard deviation: $\sigma: 7$

Since , sample size : $n=20$ , which is small sample (n<30) so the test applied here is a t-test.

Degree of freedom= $n-1=20-1=19$

Sample mean : $\overline{x}=60$

Level of significance : $1-\alpha:0.98$

Then , significance level : $\alpha: 1-0.98=0.02$

Using t-distribution table , Critical value : $\text{t-score}=t_{n-1, \alpha/2}= 2.539483$

The confidence interval for population mean is given by :-

$\overline{x}\pm t_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$

$60\pm( 2.539483)\dfrac{7}{\sqrt{20}}\approx60\pm3.97=(56.03\ ,63.97)$

Hence, a 98% confidence interval for the population mean= $(56.03\ ,63.97)$

4 0

3 years ago