3 years ago

Help plez it is due tommorow

Mathematics

1 answer:

Sphinxa [80]3 years ago

6 0

9:=4/5 10:=7/9do you want me to do the strategies for you. what grade are you in

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HELP WITH SOME GEOMETRY

Verizon [17]

Answer:

9 is the answer

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2 years ago

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3 years ago

Jay bought a guitar on sale at 45% off. The original price was $514.60. What was the amount of discount on the guitar?

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3 years ago

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Twice a number is equal to 35 more than seven times the number. Find the number

amm1812

number - n

Twice a number - 2n

Seven times the number - 7n

2n = 7n +35

7n-2n = -35

5n = -35

n = - 7

Check:

2(-7) = 7(-7) +35

-14 = -49 + 35

-14 = -14 True

The number is (- 7).

8 0

3 years ago

Find the surface are of the cylinder in terms of pi

Andrej [43]

Hello!

To find the surface area of a cylinder you use the equation

$SA = 2 \pi rh + 2 \pi r^{2}$

SA is surface area
r is radius
h is height

PUt in the values you know

$SA = 2 \pi (7)(18) + 2 \pi * 7^{2}$

Square the number

$SA = 2 \pi (7)(18) + 2 \pi * 49$

Multiply 7 and 18

$SA = 2 \pi * 126 + 2 \pi * 49$

Multiply 126 by 2

$SA = 252 \pi + 2 \pi * 49$

Multiply the 49 by 2

$SA = 252 \pi + 98 \pi$

Add

$SA = 350 \pi$

The answer is $A)350 \pi cm^{2}$

Hope this helps!

7 0

3 years ago