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2 years ago

The circumference of a child's swimming pool that has a radius of 3 feet.

Mathematics

1 answer:

ExtremeBDS [4]2 years ago

7 0

Formula for circumference= (2)(pi)(r) or (pi)(d)
diameter=2r=6ft
6ft*3.14=18.84

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Rama09 [41]

Answer:

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Standard deviation: 5.2 students

Step-by-step explanation:

Khan

4 0

2 years ago

18,000 amounts to 21,600 in 4 years at simple interest. Find the sum of

AnnyKZ [126]

Answer:

$\$20,400$

Step-by-step explanation:

we know that

The simple interest formula is equal to

$A=P(1+rt)$

where

A is the Final Investment Value

P is the Principal amount of money to be invested

r is the rate of interest

t is Number of Time Periods

step 1

Find the rate of interest

in this problem we have

$t=4\ years\\ P=\$18,000\\ A=\$21,600\\r=?$

substitute in the formula above and solve for r

$\$21,600=\$18,000(1+4r)$

$1.2=(1+4r)$

$4r=1.2-1$

$r=0.2/4=0.05$

The rate of interest is $5\%$

step 2

Find the sum of money that will amount to 25,500 in 5 years, at the same rate of interest

in this part we have

$t=5\ years\\ P=?\\ A=\$25,500\\r=0.05$

substitute in the formula above and solve for P

$\$25,500=P(1+0.05*5)$

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3 0

3 years ago

Does anyone know the answer??

vichka [17]

Answer:

100.00

Step-by-step explanation:

x=number of months until the costs are the same

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x = 2.5 months

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