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AleksandrR [38]
3 years ago
15

The area of a compact disc is 78.53 square centimeters. What is the radius of the disc? Use pi = 3.14

Mathematics
1 answer:
Tom [10]3 years ago
5 0

Answer:

r = 5 cm

Step-by-step explanation:

A = πr²

78.53 = (3.14)r²

divide by 3.14

25 = r²

r = ±5

r = 5

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David and Tonya each cut a cylinder in half. The cross-section that results from David's cut is a rectangle. The cross-section t
bija089 [108]

Answer:

Tonya cut the cylinder vertically and David cut it diagonally.

4 0
3 years ago
each truck in the line weigh two tons more than the truck before it. the trucks weigh a total of 32 tons.how many pounds does a
mixer [17]
If there are 4 trucks then the first truck weighs x
then x+2tons
then x+4tons
then x+6tons = 32tons
so 4x+12=32
         -12   -12
     /4         /4
x=5 
so plug it back in 
truck 1= 5tons or 10,000lbs
truck 2= 7tons or 14,000lbs
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6 0
3 years ago
Round to the nearest hundredth: 2.0625
AURORKA [14]

Answer:

2.06

Step-by-step explanation:

lmk if u need an explanation

5 0
3 years ago
Read 2 more answers
10 + 2n = 8n - 2n + 10
galina1969 [7]

Answer:

n=0

Step-by-step explanation:

Rearrange

10+2=8−2+10

2+10=8−2+10

Combine like terms

2n+10=<u>8n−2n</u>+10

2+10=<u>6</u>+10

Subtract from both sides

2+10=6+10

2+10<u>−10=</u>6+10<u>−10</u>

Simplify

2n=6n

Subtract both sides from 6n of the equation

2=6

2<u>−6</u>=6<u>−6</u>

Solution

n=0

5 0
3 years ago
A soccer team drank 7 gallons of water during the first 3 games this season. At this rate, about how many gallons of water will
andrezito [222]
The answer would be 77.
8 0
3 years ago
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