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3 years ago

What is the answer to number 15 p.s. show how u got this ANSWER PLEASE

Mathematics

1 answer:

Anuta_ua [19.1K]3 years ago

7 0

Answer:

The volume of the rectangular prism is $V=442.341\ cm^{3}$

The surface area of the rectangular prism is $SA=384.62\ cm^{2}$

Step-by-step explanation:

we know that

The volume of the rectangular prism is equal to

$V=LWH$

substitute the values

$V=(12.7)(8.1)(4.3)=442.341\ cm^{3}$

The surface area of the rectangular prism is equal to the area of its six faces

$SA=2(8.1)(4.3)+2(12.7)(8.1)+2(12.7)(4.3)=384.62\ cm^{2}$

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This is for 20 points!!!!!!!

3241004551 [841]

All really need to do is pick one number. so, we will go with 6 and 87.

6 times 12 is 72 then you subtract that from $87.

That would be 15

To double check, you can use another one. 9 and 123.

9 times 12 is 108. subtract that from 123 and you get 15.

Your answer is B) $15

Hope I helped :)

4 0

4 years ago

The birth rate of a population is b(t) = 2300e0.021t people per year and the death rate is d(t)= 1450e0.018t people per year, fi

Cerrena [4.2K]

Answer:

38,674.This area represents the increase in population over a 10-year period.

Step-by-step explanation:

When graphed over the interval 0 ≤ t ≤ 10, the birth rate is more than the death rate. This means the area between the two curves is the amount of births subtract the amount of deaths. This results in an area which means the increase of the population.

The birth rate is graphed in green and the death rate is graphed in blue.

To find the area, take the integral of the difference of the functions:

$\int\limits^{10}_0 {2300e^{0.021t} - 1450e^{0.018t} } \, dt \\\\\frac{2300e^{0.021t}}{0.021} - \frac{1450e^{0.018t}}{0.018} \\\\(\frac{2300e^{0.21}}{0.021} -\frac{1450e^{0.18}}{0.018} ) - (\frac{2300}{0.021}- \frac{1450}{0.018} ) \\\\135117.12 - 96442.51 \\\\38,674$

7 0

3 years ago

28. What is the solution to 12-(2x+6) = -4x +10 +2(x-8) *

S_A_V [24]

Answer:

A-no solution

Step-by-step explanation:

There are no values of x that make the equation true.

7 0

3 years ago

Read 2 more answers

to make a chocolate ice cream you need about 3/8 pounds of chocolate how many pounds of chocolate will you need to make 4 batche

marin [14]

Well since you're using 3/8 and you need to make 4 batches, you need to multiply 3/8 with 4 it would equal 12/8 or 1 4/8 (I could be wrong but this is my answer hopefully this helps) :) <span />

4 0

4 years ago

Working together, it takes Sam, Jenna, and Francisco two hours to paint one room. When Sam works alone, he can paint one room in

lutik1710 [3]

Answer: 12 hours

Step-by-step explanation:

Given : Working together, it takes Sam, Jenna, and Francisco two hours to paint one room.

When Sam works alone, he can paint one room in 6 hours. When Jenna works alone, she can paint one room in 4 hours.

Let 't' be the time taken by Francisco to paint one room on his own.

Then , we have

Rate of work of Sam +Rate of work of Jenna + Rate of work of Francisco =Rate of work they all do together

$\dfrac{1}{6}+\dfrac{1}{4}+\dfrac{1}{t}=\dfrac{1}{2}$