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3 years ago

What is ,- 7 ≤ 2a + 7 ≤ 23

2 answers:

amm18123 years ago

8 0

To solve a compound inequality, separate it into two inequalities-
2a + 7>-7
2a +7<23

Solve the inequality-
a>-7
a<8

Find the intersection-
a ∈[-7,8]

Nezavi [6.7K]3 years ago

7 0

Answer:

−7≤a≤8

Step-by-step explanation:

Here's a quick step by step hope this helps!

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30% of ________is $75?

Helga [31]

The answer to this is 250.

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4 years ago

1. A professional basketball used for league play has a diameter of 25 cm. Which of the following is closest to the volume of th

yKpoI14uk [10]

Answer:

V = 8,181.23 $cm^{3}$

Step-by-step explanation:

Unfortunately, we are not given any answer choices to choose from but using the information provided we can find the actual volume of the basketball. A basketball is made in the shape of a sphere and the formula for the volume of a sphere is the following...

V = $\frac{4}{3} * \pi * r^{3}$

radius of a circle/sphere is half of it's diameter. Since we are provided the diameter size we simply divide it by 2 which would give us 12.5cm. Now we simply plug this value into the formula and solve for V.

V = $\frac{4}{3} * \pi * 12.5^{3}$

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V = 8,181.23 $cm^{3}$

5 0

3 years ago

What equals 39 by multiplying 10 ?

qwelly [4]

You can just do the inverse operation. 39 divied by 10 = 3.9

so 3.9 *10 =39

hope it helped

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3 years ago

Rita is saving up 15,000 to put a down payment on a condominium. If he starts with 8,000 saved and saves an additional $850 each

belka [17]

I think there is more to the question, but the equation to solve for the number of months until Rita has enough money to put a down payment for a condominium is 15,000=8,000+850X

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3 years ago

Romeo had pound of fudge left. He divided the remaining fudge into -pound 5 16 bags. Write and solve an equation that models the

lbvjy [14]

Answer:

3/4 / 5/16

Step-by-step explanation:

3/4 / 5/16 = 15/2 pound bags

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3 years ago