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Stells [14]
3 years ago
12

8th grade math, please help.

Mathematics
1 answer:
sineoko [7]3 years ago
4 0
Volume: 4/3 (pi)(r)^3

Volume: 4/3 (pi)(5)^3 = 523.6 in
(I believe)
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A lake was closed because of an accidental pesticide spill. The concentration of the pesticide after the spill was 848 parts per
DochEvi [55]

Answer:

Step-by-step explanation:

a_{n}=a_{1}r^{n-1}\\0=848(0.75)^{n-1}\\or~(0.75)^{n-1}=0\\0.75

or~n \rightarrow 1+\infty\\or~n \rightarrow \infty

Hence lake will never be free of pesticide.

5 0
3 years ago
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On a hiking trip LaShana notes that she hiked about 12 kilometers every 4 hours. If she continues at this rate' how many kilomet
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18 Kilometers

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If you divide 12 by 4 you get 3, so she is going about 3 kilometers an hour. Add 3 for each hour, and you get 18 kilometers in 6 hours.

8 0
3 years ago
Find a formula for the nth term
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3 0
3 years ago
Convert 3/5 into a percent
andrezito [222]
Divide it and get 0.6 then multiply by 100 so 60%
4 0
4 years ago
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Find the value of f(-1) for the function below
mrs_skeptik [129]

Put the value of x = -1 to the equation of a function f(x):

f(x)=\dfrac{2}{3}\times3^{3x+12}\\\\f(-1)=\dfrac{2}{3}\times3^{3(-1)+12}=\dfrac{2}{3}\times3^{-3+12}=\dfrac{2}{3}\times3^9=\dfrac{2}{1}\times3^8=13,122\to\boxed{B.}

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4 years ago
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