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mash [69]
3 years ago
7

Use a number line to explain why --15 ÷ 3 =-15

Mathematics
1 answer:
Diano4ka-milaya [45]3 years ago
7 0
It's equal to -15 because you are dividing by an negative and if it's only 1 negative number in your equation then your answer will be a negative and if it's 2 negatives then it would be a positive answer
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Step-by-step explanation:

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The area of a rectangle is 65 m2 , and the length of the rectangle is 3 m less than twice the width. find the dimensions of the
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X = <span>width
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3 years ago
The first shipping by company charges a fee of $20 to ship a medium box, plus an additional $1 per pound. A second company charg
viktelen [127]

Answer:

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Step-by-step explanation:

We can derive two expressions as follows;

Total cost for the First shipping company=Medium box charges+total additional charges

where;

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replacing;

Total cost for the First shipping company=20+n....equation 1

Total cost for the second shipping company=Medium box charges+total additional charges

where;

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Total additional charges=Charges per pound×number of additional pounds (n)

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replacing;

Total cost for the First shipping company=15+2 n....equation 2

Equating equation 1 and equation 2

15+2 n=20+n

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Replace the value for n in equation 2

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Answer:

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Step-by-step explanation:

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