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Svetllana [295]
3 years ago
8

Which situation represents the equation: 5x - 18 = 42

Mathematics
1 answer:
Nookie1986 [14]3 years ago
3 0
The correct answer is C. She makes an amount of money per hour x, then she works five hours so 5x, she then spends 18 on pizza so 5x-18, and then has 42 left over. 5x-18=42
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If f(x) =5x + 12 what is f-1(x)
Olin [163]
To find the inverse of a function, first, let's switch f(x) with y

y=5x + 12

Now, change all the x's into y's and change all the y's into x's

x=5y+12

Now, let's solve this equation in terms of y.

Subtract both sides by 12

x-12 = 5y

Divide both sides by 5

\frac{x}{5} -  \frac{12}{5} =y

Flip the equation so we have the y on the left

y=\frac{x}{5} - \frac{12}{5}

Now, replace the y with f^{-1}(x)

f^{-1}(x)=\frac{x}{5} - \frac{12}{5}

That's your answer. If you need any clarifications, feel free to comment.

Have an awesome day! :)
6 0
3 years ago
Solve for s. y=sx+g.
ehidna [41]
This is what the answer looks like:

s = (y - g) ÷ x
6 0
3 years ago
Read 2 more answers
Please help me with this question, its in the picture :)
harkovskaia [24]

Answer:

D. 17.3in^2

<em>Hope that was helpful:)</em>

3 0
3 years ago
Add using a number line 5/6 plus - 1 1/6
ElenaW [278]

Start at 5/6 on the number line.  Move 11/6 spaces to the left (11/6 is negative; if you are adding a negative number, move to the left).  You should land on -1.

6 0
3 years ago
Factor: 3x4y3 – 48y3
kati45 [8]

Answer:

3y3(x2 + 4)(x + 2)(x -2)

Step-by-step explanation:

3x4y3– 48y3.

= 3y3(x4 – 16).

= 3y3[(x2)2 - 42].

= 3y3(x2 + 4)(x2 - 4).

= 3y3(x2 + 4)(x2 - 22).

= 3y3(x2 + 4)(x + 2)(x -2).

3 0
3 years ago
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