3 years ago

Can anyone help with 7&8 I’ll mark brainliest

Mathematics

1 answer:

ladessa [460]3 years ago

6 0

Hi, this should be correct :)

Hope this helps!!

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Anna works as a painter. She charges S130 for paint supplies and $25 for each hour, h, she

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Answer:

$25(h) + $130

Step-by-step explanation:

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2x+1y=25 <br> find the equation of x

leonid [27]

Answer:

−1

25/2

Step-by-step explanation:

Let's solve for x.

2x+1y=25

Step 1: Add -y to both sides.

2x+y+−y=25+−y

2x=−y+25

Step 2: Divide both sides by 2.

−y+25

−1

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Help with this question

Morgarella [4.7K]

Answer:

C) (x-3)(x+3)

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If the weight of a class 4 truck is increased by two tons will it still be classified as a class 4 truck

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3 years ago

Let f(x) = x2 - 81. Find f-1(x).

dusya [7]

This is equivalent to finding a function g in which $g(x^2-81)=x$ .

We simply reverse the actions of the initial function by adding 81 back and taking the square root. Therefore, $f^{-1}(x)=\sqrt{x+81}$ .

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3 years ago