What is the eighth term in the arithmetic sequence defined by the explicit formula an=2n+7? Enter your answer in the box.

Mathematics

1 answer:

Anettt [7]3 years ago

5 0

Answer:

The 8th term is 23

Step-by-step explanation:

If we are given the formula for the sequence

an=2n+7,

then to find the 8th term we substitute n=8 into the formula.

a8 = 2(8) +7

a8 = 16+7

a8 = 23

The 8th term is 23

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almond37 [142]

C negative 4 :) Hope that helps!!

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4 years ago

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Write the given expression as an algebraic expression in x. tan(2 cos^-1(x))

miv72 [106K]

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\\\\\\
\textit{if we say }cos^{-1}\left( \frac{x}{1} \right)=\theta\textit{ that means }tan\left[ 2cos^{-1}\left( \frac{x}{1} \right) \right]\iff tan(2\theta)\\\\
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tan(2\theta)=\cfrac{2tan(\theta)}{1-tan^2(\theta)}\implies tan(2\theta)=\cfrac{2\cdot \frac{\pm\sqrt{1-x^2}}{x}}{1-\left( \frac{\pm\sqrt{1-x^2}}{x} \right)^2}
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4 years ago

0.019 + (2.3 * 10-4)

DochEvi [55]

Answer:

19.019

Step-by-step explanation:

Let's solve this problem using the order of operations, or PEMDAS.

0.019 + (2.3 × 10 - 4) = 0.019 + (23 - 4) = 0.019 + 19 = 19.019

Hope this helps!

5 0

3 years ago