3 years ago

9 ( x + 3 ) - (2x + 5)

Mathematics

1 answer:

Ivahew [28]3 years ago

4 0

Answer:

7x+22

Step-by-step explanation:

expand: 9x+27-2x-5

put together: 7x+22

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4vir4ik [10]

Answer:

$56

Step-by-step explanation:

Lucy's shirts were $12 each since 60/5 is 12. Frank's shirts were 2 more than lucys so his were $14. 14 times 4 is 56.

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3 years ago

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Please HURRY Explain how to use guess and check reasoning to solve

o-na [289]

Answer:

Quotient means the result of division. To use guess and check to solve, you would divide different numbers by 7 until you get 9. The result is 63 ÷ 7 = 9. The quotient of sixty-three and seven is nine.

Step-by-step explanation:

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3 years ago

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Consider the following function. f(x) = |x − 9| Find the derivative from the left at x = 9. If it does not exist, enter NONE. -1

nydimaria [60]

Answer with Step-by-step explanation:

We are given that

$f(x)=\mid x-9\mid$

$f(x)=-(x-9)$ when x<9

$f(x)=x-9$ when $x\geq 9$

LHD

$\lim_{x\rightarrow 9-}f'(x)$

= $-\lim_{x\rightarrow 9-}(x-9)=-1$

RHD

$\lim_{x\rightarrow 9+}f'(x)$

$=\lim_{x\rightarrow 9+}(x-9)=1$

$LHD\neq RHD$

Hence, the function is not differentiable at x=9

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3 years ago

2x+7y=-20, y=3x+7. solve using elimination

Setler79 [48]

Answer:

(x,y) = (-3,-2)

Step-by-step explanation: Please brainliest!

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2 years ago

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