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2 years ago

Please answer this question

Mathematics

2 answers:

dlinn [17]2 years ago

7 0

Graph 1: Domain = [-6,6]

Graph 1: Range = {-5,-1,0}

Graph 2: Domain = (-4, infinity)

Graph 2: Range = {-4} or [-2, infinity)

Graph 3: Domain = (-infinity, infinity)

Graph 3: Range = [-5, infinity)

Graph 4: Domain = [-5.5, infinity)

Graph 4: Range = (-infinity, infinity)

Gnesinka [82]2 years ago

4 0

Answer:

zero nun after dat

Step-by-step explanation:

it's infantry yuh

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For (x - 1)(x - 7) to equal 0, either (x - 1) or (x - 7) must equal what?

Kisachek [45]

$(x - 1)(x - 7) = 0$

${x}^{2} - 8x + 7 = 0$

${x}^{2} - 8x = - 7$

$- 7x = \frac{ - 7}{x}$

$x = \frac{ - 7}{ \frac{x}{ - 7} } \implies x = x \implies x \in \mathbb{R}$

x is true for any number in real domain.

8 0

3 years ago

A plumber has a set fee for a house call and charges by the hour for repairs. The total cost of her services can be modeled by c

Lostsunrise [7]

Answer:

1, 2 and 3

Step-by-step explanation:

Let

t -----> the number of hours the job takes

C(t) -----> the total cost for the service

we have

$C(t)=125t+95$

This is the equation of a line in slope intercept form

where

The slope m is equal to $m=125\ \frac{\$}{h}$

The y-intercept is the point (0,95) ---> The cost is $95 for the value of t equal zero (fee)

therefore

<u><em>The statements that are true</em></u>

1 a house call fee costs $95

2 the plumber charges $125 per hour

3 the number of hours the job takes is represented by t

4 0

2 years ago

A random survey of people at a mall shows that 22 prefer to take a family trip by car, 18 prefer to travel by plane, and 4 prefe

o-na [289]

Answer:

409

Step-by-step explanation:

18 x

--- = ---

22 500

18 x 500 = 9000

9000/22 = 409

7 0

2 years ago

Read 2 more answers

What expression is equivalent to 4.8 + 2.2w - 1.4 w - 2.4

motikmotik

Answer: =0.8w+2.4

Step-by-step explanation:

3 0

2 years ago

Use the following function to find the value of each operation.

Murljashka [212]

<h2>Evaluating Composite Functions</h2><h3>Answer:</h3>

$w(f(m(2))) = 593$

<h3>Step-by-step explanation:</h3>

We can write how $w(f(m(x)))$ will be defined but that's too much work and it's only useful when we are evaluating $w(f(m(x)))$ with many inputs.

First let's solve for $m(2)$ first. As you read through this answer, you'll get the idea of what I'm doing.

Given:

$m(x) = -4x +1$

Solving for $m(2)$ :

$m(2) = -4(2) +1 \\ m(2) = -8 +1 \\ m(2) = -7$

Now we can solve for $f(m(2))$ , since $m(2) = -7$ , $f(m(2)) = f(-7)$ .

Given:

$f(x)=3x-1$

Solving for $f(-7)$ :

$f(-7)=3(-7)-1 \\ f(-7) = -21 -1 \\ f(-7) = -22$

Now we are can solve for $w(-22)$ . By now you should get the idea why $w(f(m(2))) = w(-22)$ .

Given:

$w(x) = x^2 -5x -1$

Solving for $w(-22)$ :

$w(-22) = (-22)^2 -5(-22) -1 \\ w(-22) = 484 -5(-22) -1 \\ w(-22) = 484 +110 -1 \\ w(-22) = 593$

8 0

2 years ago