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3 years ago

F(x) = x² + 7 X(-2) =

Mathematics

1 answer:

gizmo_the_mogwai [7]3 years ago

4 0

Answer:

hope it will help you

Step-by-step explanation:

f(x)=x²+7

X(-2)=?

therefore X(-2)=(-2)²+7

=4+7

=11

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Express 10500 in terms of its prime factors

8_murik_8 [283]

Step-by-step explanation:

$10500 = 3 \times 5 \times 5 \times 5 \times 7 \times 2 \times 2 \\ \\ 10500 = 2 \times 2 \times 3 \times 5 \times 5 \times 5 \times 7 \\ 10500 = {2}^{2} \times 3 \times {5}^{3} \times 7$

7 0

2 years ago

Nikos paid $22,500 for a new car. Over the next 3 years the value of his dropped $3750. How much did the value of the car drop e

skad [1K]

Answer:

about $1250 per year.

8 0

2 years ago

Which of the following correctly describes the domain of the function shown

labwork [276]

Option D:

$\{x: x \neq 1\}$ is the domain of the function.

Solution:

Given function is

$$r(x)=\frac{2 x}{x-1}$

<u>To find the domain of the function:</u>

Option A: $\{x: x \neq 0\}$

Substitute x = 0 in r(x).

$$r(0)=\frac{2 \times 0}{0-1}=0$

If x = 0, then r(0) = 0

So that x ≠ 0 is false.

So, $\{x: x \neq 0\}$ is not the domain of the function.

Option B: $\{x: x \neq \pm 1\}$

Substitute x = –1 in r(x).

$$r(-1)=\frac{2 \times (-1)}{-1-1}=1$

If x = –1, then r(–1) = 1

So that x = ± 1 is false.

So, $\{x: x \neq \pm 1\}$ is not the domain of the function.

Option C: $\{x: \text { all real numbers }\}$

Substitute x = 1 in r(x).

$$r(1)=\frac{2 \times 1}{1-1}=\frac{2}{0}$

It is indeterminate.

So, all real numbers are not the domain of the function.

Option D: $\{x: x \neq 1\}$

Substitute x = 1 in r(x).

$$r(1)=\frac{2 \times 1}{1-1}=\frac{2}{0}$

It is indeterminate.

So, $\{x: x \neq 1\}$ is the domain of the function.

4 0

3 years ago

What is the multiplicative inverse of −18?

AlexFokin [52]

Answer:

1/18 i know it is right

6 0

2 years ago

Read 2 more answers

Can someone solve this

dimaraw [331]

Answer:

y= -1/4x + (-1)

Step-by-step explanation:

(4,-2) (0,-1)

m= y2-y1/x2-x1

m=-2-(-1)/4-0

m= -1/4

y= mx + b

-2= -1/4(4)+ b

-2= -1 +b

+1 +1

-1= b

3 0

2 years ago