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3 years ago

9

I NEED HELP PLEASE I have been on this question for a hour

1 answer:

Alexus [3.1K]3 years ago

7 0

Answer:

A-8

Step-by-step explanation:

Any other higher number plugged in makes the equation false

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Find the domain of f(x)=x-9/x squared-81

vagabundo [1.1K]

$f(x)=\dfrac{x-9}{x^2-81}\\\\\text{The domain:}\\\\x^2-81\neq0\qquad\text{add 81 to both sides}\\\\x^2\neq81\to x\neq\pm\sqrt{81}\\\\x\neq-9\ \wedge\ x\neq9\\\\Answer:\ \boxed{\text{All real numbers except -9 and 9}}\to\boxed{x\in\mathbb{R}-\{-9,\ 9\}}$

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3 years ago

Insert one term between -13 and -119 to create an arithmetic sequence of three terms.

daser333 [38]

Answer:

-66

Step-by-step explanation:

- 13, ____, -119

first, find the common difference:

-13 - (-119) = 106

next, divide 106 by 2: $\frac{106}{2}$ = 53

so, the common difference is 53.

now, subtract 53 from -13:

-13 - 53 = -66

5 0

2 years ago

Read 2 more answers

If a = -2, b = -6, c = -4, and d = -3, evaluate the following expressions.

abruzzese [7]

It’s Has to be B because if you had the negative numbers you get -12

6 0

3 years ago

Please answer soon ty!

Hunter-Best [27]

Answer:

A

Step-by-step explanation:

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2 years ago

Aida owns a brick house in the country worth $95,000, and the contents of

Lostsunrise [7]

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Step-by-step explanation:

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3 years ago