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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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What’s the total value of 20 quarters, 40 dimes, 30 nickels, and 15 pennies
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20/4= $5 40/10= $4  .05 x 30= $1.50 and add those together to get $10.50 then add the 15 pennies which is $10.65

6 0
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3 years ago
A certain star is 2.4 x 102 light years from the Earth. One light year is about 5.9 x 1012 miles. How far
Studentka2010 [4]

Answer:

2.5 x 10^{15} miles

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We are given that 1 light year ≈ 5.9 x 10^{12} miles so:

  • 4.3 x 10² light year · <u>5.9 x </u>10^{12}<u> miles </u>                                                                                                
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Multiply 4.3 an 5.9 and round to 2 significant digits then add the exponents:

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This is not the scientific notation since the number is not between 0 and 10 so we move the decimal point by 1 place to the left. We then add 1 to the exponent to obtain the final answer:

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6 0
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