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vova2212 [387]
4 years ago
13

You have an above ground pool that is 20 feet in diameter. One bag of sand does three square feet. How many bags of sand do you

need?
Mathematics
1 answer:
r-ruslan [8.4K]4 years ago
8 0

Answer:    Number of sand bags are 105

Step-by-step explanation:

Alright, lets get started.

The diameter of pool is given as : 20 \ \text{feet}

The radius of pool will be : r=\frac{20}{2}=10

So the area of the pool will be:

Area = \pi r^2

Area = \pi *10^2

Area = 100 \pi

Area = 314.16

3 square feet is covered by 1 sand bag, so

314.16 square feet will be covered by : \frac{314.16}{3}

So, no of sand bag = 104.7

Rounding off to nearest number

Number of sand bags are 105  :   Answer

Hope it will help :)

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a coin is taken at random froma purse that contains one penny, 2 nickels, 4 dimes, and 3 quarters. let x be the value of the dra
algol [13]

Answer:

x = 12.6 pennies

Step-by-step explanation:

total number of coins = 1 + 2+ 4 + 3 = 10 coins

P(penny) =\dfrac{1}{10}

P(nickels) =\dfrac{2}{10}

P(dimes) =\dfrac{4}{10}

P(quarters) =\dfrac{3}{10}

hence average value of the coin

x = Penny x P(Penny) + nickel x P(nickel) + dimes x P(dimes) + quarters x P(quarters)

nickels  = 5 pennies dimes = 10 ; and quarters = 25 pennies

x = 1 \times \dfrac{1}{10} + 5\times \dfrac{2}{10} +10\times \dfrac{4}{10} +  25\times \dfrac{3}{10}

x = 0.1 + 1 + 4 + 7.5

x = 12.6 pennies

hence, the average pennies for the first draw is equal to x = 12.6 pennies

6 0
3 years ago
Ashley has 20 pieces of candy in a bag: 2 mint sticks, 4 jelly treats, and 14 fruit tart chews. If she eats one piece every 8 mi
AleksAgata [21]
The probability that her first treat is jelly is 4/20. Since she eats the candy and does not replace it, the probability the second treat is jelly would be 3/19 (1 less jelly and 1 less total candies). You would then multiply (4/20) by (3/19). That is your answer.
3 0
3 years ago
How do you understand what happens on a fraction number line and how do you know where the fraction is. Tell me how we will be a
frozen [14]

9514 1404 393

Answer:

  understand what the fraction means

Step-by-step explanation:

First of all, you need to <em>understand what 2/3 means</em>. It means 1 whole has been divided into 3 equal parts, and you're concerned with 2 of those parts.

In the number line in the first attachment, the space between 0 and 1 has been divided into 3 equal parts. The decimal value (rounded) is shown at each tick mark. The point marked "2/3" is located at the second of those divisions, counting from zero.

__

The same fraction is located on the same number line in the second attachment. That number line is marked with divisions at intervals of 1/10, so there are 10 of them between 0 and 1. The value 2/3 is represented by the point that is (2/3)(10) = 6 2/3 of those intervals, so is between 0.6 and 0.7 on the number line.

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If the number line were divided into 12ths, then the fraction 2/3 would be located at the 8th tick mark, counting from 0. (2/3)(12) = 8 That is shown in the third attachment.

5 0
3 years ago
Which graph represents a function?
valina [46]

The graph on the top right would represent a function. A function line on a graph includes one line going in one direction. It's not 2 lines, its not just dots either and it definitely isn't in a square because, as I said, it goes in ONE direction. Hope this helped!

8 0
3 years ago
Read 2 more answers
PLEASE HELP WILL MEDAL BRAINLIEST ANSWER!
babunello [35]
The amount after 7 years is given by:
A=15000(1+\frac{0.048}{4})^{4\times7}=20,948.15
The answer is: $20,948.15
3 0
4 years ago
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