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GenaCL600 [577]
3 years ago
9

What is the 8th term of the sequence 1, 3, 9, 27, 81,... .

Mathematics
1 answer:
slega [8]3 years ago
4 0

9514 1404 393

Answer:

  2187

Step-by-step explanation:

This geometric sequence has a first term of 1 and a common ratio of 3. Its general term can be written as ...

  an = a1·r^(n-1)

  an = 3^(n-1)

Then the 8th term is ...

  a8 = 3^(8-1) = 2187

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I need help with 5-6 PLEASEEEE!! Also please excuse the answers cause I know it’s wrong
sergey [27]

Step-by-step explanation:

5.

angle STQ is the supplementary angle (together they are 180° below line MQ) to 2x + 8.

above ST we have a group of 3 angles that combine to 180° :

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90°

71 - x

so, to get x first :

2x + 8 + 90 + 71 - x = 180

x + 169 = 180

x = 11

so, the angle MTS =

2x + 8 = 2×11 + 8 = 22 + 8 = 30°.

6.

therefore, the angle STQ is

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7 0
2 years ago
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3 years ago
Simplify the expression. Write the answer using scientific notation. 0.3(8.2 x 10^-3)
olchik [2.2K]

Answer:

0.3(8.2 x 10^-3) = 2.46 X 10 ^ -3

Step-by-step explanation:

We need to solve the equation 0.3(8.2 x 10^-3) and write answer in scientific notation.

Solving,

= 0.3(8.2 x 10^-3)

= 0.3 * 0.0082

= 0.00246

Writing in scientific notation

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8 0
3 years ago
Evaluate the function f(x) = 5x-3
loris [4]

Answer:

x = 3/5 = 0.600

Step-by-step explanation:

4 0
3 years ago
500=100(x-1)<br> Someone tell me step by step
Andre45 [30]
First, distribute the 100 to the (x-1) portion:
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then, add 100 to both sides of your equation to get “x” alone on the right side:
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next, divide 100x by 100 and 600 by 100 to isolate a singular “x”:
600/100 = 100x/100
6 = x

therefore, x=6 is your solution
5 0
2 years ago
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