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lys-0071 [83]
2 years ago
15

Evaluate 8-2.A. -16B. -64C. -1/64D. 1/64 ​

Mathematics
1 answer:
makvit [3.9K]2 years ago
8 0

I'm assuming you meant to write 8^(-2) or 8^{-2} where the -2 is the exponent over the 8.

If my assumption is correct, then we use the rule a^{-b} = \frac{1}{a^b}

So,

a^{-b} = \frac{1}{a^b}\\\\8^{-2} = \frac{1}{8^2}\\\\8^{-2} = \frac{1}{64}

<h3>Answer: Choice D.  1/64</h3>
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scoray [572]

Answer: x = -0.377

Step-by-step explanation:

We have the equation:

4^(5*x) = 3^(x - 2)

Now we can use the fact that:

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Then we can apply Ln(.) to both sides of the equation to get:

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(5*x)*Ln(4) - x*Ln(3) = -2*Ln(3)

x*(5*Ln(4) - Ln(3)) = -2*Ln(3)

x = -2*Ln(3)/(5*Ln(4) - Ln(3)) = -0.377

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3 years ago
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e-lub [12.9K]

Answer:

mFG = 67r ( Where r is the radius of the circle)

∠ECF = 67°

Step-by-step explanation:

i) m FG

Join CG

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Now The length of the minor arc is given by the formula

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m arc FG = \frac {67}{2 \pi} \times 2 \pi r

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It is because of the rule which says that equal chords subtend equal angle at center

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daser333 [38]

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Step-by-step explanation:

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This equation can be rearranged as 5x²+3x-9=0

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The missing angles are 39 degrees 94 degrees and 47 degrees.

4 0
3 years ago
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