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irinina [24]
3 years ago
15

Which expression is equivalent to −30+(−40)+(−70) ?

Mathematics
1 answer:
lukranit [14]3 years ago
5 0

Answer:

−30+(−40)+(−70) = -140

Step-by-step explanation:

−30+(−40)+(−70) = -140

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What is the slope of the line that passes through the points (-3, 5) and (1, 7)?
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Answer:

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Step-by-step explanation:

Definition of constant of proportionality

When two variables are directly proportional to each others .

Let us assume that u and v .

u \propto vu∝v

Than the equation becomes u= kv

Where k is called the constant of proportionality .

Thus in the question x and y are proportional variables .

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Thus

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the explanation is not mine only the answer

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