Mathematics: Can someone do question 4 for me with step by step instructions

Can someone do question 4 for me with step by

Ответ:

2Thea12Maine6

15.03.2022

Given that
$x + \frac{1}{x} = 9$

[Square both sides]
$(x + \frac{1}{x})^2 = 9^2$

The Algebraic Formula:
(a+b)^2 = a^2 + 2(a)(b) + b^2

Therefore:
$x^2 + 2(x)(\frac{1}{x}) + ( \frac{1}{x})^2 = 9^2$

[Evaluate the terms]
$x^2 + 2+ \frac{1}{x^2} = 81$

[-2 on both sides]
$x^2 + \frac{1}{x^2} = 81 -2$

[Evaluate the right side]
$x^2 + \frac{1}{x^2} = 79$ (Answer B)

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Ответ:

xxaurorabluexx

19.09.2020

Mathematics

Answers are below

Step-by-step explanation:

The rate of change represents the number of stamps added every month.

The rate of change is 3.

The initial value represents how stamps she had before adding more.

The initial value us 8.

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Can someone do question 4 for me with step by step instructions

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