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Margaret [11]
3 years ago
8

What is the surface area of 9in

Mathematics
1 answer:
Lelechka [254]3 years ago
6 0
Surface Area = 4×π×92 = 1017.8760197631 inches2 that is the surface for ball
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PRE-ALGEBRA HELP PLEASE!
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</span> The rate of change is -30 songs each week, that is because the amount of songs left to be downloaded decrease by 30 each week.</span>

<span><span>PART B:
</span><span> lets use 2 points of the graph p1(0, 150), p2(1, 120)
calculate the slope:
m = (y2- y1)/(x2 - x1) = (120 - 150)/(1 - 0)
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3 years ago
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Who's is the faster runner? Raj can run 1 1/3 laps in 1/4 of an hour. Yvonne can run 4 1/2 laps in 7/8 of an hour.
SpyIntel [72]
Raj can run faster than yvonne
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3 years ago
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Five numbers has a mean of 12. When one (1) number is removed the mean is 11. What is the value of the number removed?
bonufazy [111]

Answer:

16

Step-by-step explanation:

The mean of a group of values is calculated as

mean = \frac{sum}{count}

Given 5 numbers with a mean of 12, then

\frac{sum}{5} = 12 ( multiply both sides by 5 )

sum = 60

let the number removed be x , then

\frac{60-x}{4} = 11 ( multiply both sides by 4 )

60 - x = 44 ( subtract 60 from both sides )

- x = - 16 ( multiply both sides by - 1 )

x = 16

The number removed was 16

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3 years ago
The cost of 3 scarves is $80.25. What is the unit price?
Lynna [10]

Answer:

$26.75 per scarf

Step-by-step explanation:

3 scarves = $80.25 (quite expensive)

1 scarf = $80.25/3

1 scarf = $26.75

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3 years ago
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