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Tomtit [17]
3 years ago
5

Find the value of f(-1) for the function below

Mathematics
1 answer:
mrs_skeptik [129]3 years ago
8 0

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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2 years ago
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The circumference of ruby's old swimming pool is 47.1 feet. Her new swimming pool has a diameter of 21 feet. How much larger is
Alla [95]

The new pool is 18.84 feet larger in circumference than the old one.

<u>Explanation:</u>

Given:

Circumference of the pool = 47.1 feet

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We know:

Circumference = 2πr

where,

r is the radius

On substituting the value:

C = 2 X 3.14 X \frac{21}{2}

C = 65.94 feet

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Therefore, the new pool is 18.84 feet larger in circumference than the old one.

6 0
3 years ago
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Natali5045456 [20]
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3 0
3 years ago
What value of 3x makes the equation true?<br> 5x+3x=5x+15/2
slamgirl [31]

Answer:

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Step-by-step explanation:

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7 0
2 years ago
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