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Rina8888 [55]
3 years ago
15

9)

Mathematics
1 answer:
Tema [17]3 years ago
5 0
Maybe B (not sure).................
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9. Which of the following do you need to know to determine the surface area and volume of a sphere?
Alexxx [7]

Answer:

A: radius of the sphere

Step-by-step explanation:

The formula for surface area is A = 4πr^2

With r being the radius and A the surface area.

For volume it is

V= (4/3)πr^3

6 0
3 years ago
If y varies directly with x and y = 2 when x = 10, then what is the value of y when x = 40? 200 45 320 8
xz_007 [3.2K]

40/10=4  2*4=8

8 is your answer



6 0
3 years ago
Help me 7th grade math please
Stolb23 [73]

Answer: 13.5 ounce bottle for $2.19

a 29.2 ounce bottle for $5.37

The 29.2 ounce bottle is better

Step-by-step explanation:

13.5 ounce bottle for $2.19

a 29.2 ounce bottle for $5.37

find the ratios

13.5/2.19 = $6.16 per unit

29.2/5.37 = $5.44 per unit

3 0
2 years ago
14. A boy completes a 100 m circular track race in 5 min. Another boy runs in the same
Aleksandr [31]

Answer:

ee

Step-by-step explanation:

5 0
3 years ago
Solve the inequality 7(x + 4) > 0.
matrenka [14]

Answer:

x > - 4

Step-by-step explanation:

Given

7(x + 4) > 0 ← distribute left side

7x + 28 > 0 ( subtract 28 from both sides )

7x > - 28 ( divide both sides by 7 )

x > - 4

3 0
3 years ago
Read 2 more answers
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