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AysviL [449]
3 years ago
8

2b−15>21? How do I do this and what is the answer???

Mathematics
2 answers:
Mashcka [7]3 years ago
4 0
2b - 15 > 21

add 15  to both sides:

2b-15+15 > 21 + 15

2b > 36

Divide both sides by 2 :

2b/2 > 36/2

2b = 36

b = 36 / 2

b > 18

hope this helps!

ASHA 777 [7]3 years ago
4 0
2b - 15 > 21

2b > 21 + 15

2b > 36

b > 18
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In 2000, there were 12900 students at college A, with a projected enrollment increase of 900 students per year. In the same year
LenaWriter [7]

Answer:

Step-by-step explanation:

Let x represent the number of years it will take the two colleges to have the same enrollment.

In 2000, there were 12900 students at college A, with a projected enrollment increase of 900 students per year. This means that the expected number of students at college A in x years time is

12900 + 900x

In the same year, there were 25,000 students at college B, with a projected enrollment decline of 700 students per year. This means that the expected number of students at college B in x years time is

25000 - 700x

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4 0
3 years ago
PLEASE HELP!!!!!!!!<br> also, show all work<br> Thank you:)
barxatty [35]

Problem 1

<h3>Answer:  104 cubic inches</h3>

----------------------

Explanation:

The prisms are similar so they have the same shape, but different sizes.

The linear scale factor from small to large is:

large/small = 10/4 = 2.5

Meaning that we multiply each dimension of the smaller prism by 2.5 to get the corresponding side length of the larger prism

4*2.5 = 10

This linear scale factor is then cubed to get the volume scale factor

(2.5)^3 = 15.625

Which tells us:

larger volume = 15.625*(smaller volume)

smaller volume = (larger volume)/15.625

smaller volume = (1625)/15.625

smaller volume = 104 cubic inches

========================================================

Problem 2

<h3>Answer:  650 square inches</h3>

----------------------

Explanation:

We will go back to the linear scale factor of 2.5

This time, we square it to get (2.5)^2 = 6.25

This is the surface area scale factor.

larger surface area = 6.25*(smaller surface area)

larger surface area = 6.25*(104)

larger surface area = 650 square inches

4 0
2 years ago
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