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geniusboy [140]
3 years ago
7

-91=13n How would you work out this math problem

Mathematics
2 answers:
creativ13 [48]3 years ago
8 0

Step-by-step explanation:

Put 'n' as the subject

-91 = 13n

-91 - 13

-104 = n

Igoryamba3 years ago
7 0

Answer:

n=-7

Step-by-step explanation:

For this you can do the inverse of division which is division. So Divide -91 and 13. Which is -7.

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lin read 3/8 of a magazine article on monday and 1/8 of article tuesday. what fraction of the article did she read on monday and
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Lin read 1/2 of the magazine article on those 2 days.

This can be found by adding 3/8 and 1/8. This gives you 4/8 or 1/2 if you simplify it (divide by 4).

I hope this helps!
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Step-by-step explanation:

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the answer will be y=-1

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Hello there! The value of x is 20 or -20

"20 or - 20" is one answer so you are supposed to answer 20 or -20, not choose only one.

Step-by-step explanation:

\large{ \frac{ {x}^{2} }{ {5}^{2} }  =  {4}^{2} }

First, we simplify 5² and 4²

\large{ \frac{ {x}^{2} }{25}  = 16}

Multiply the whole equation by 25 to get rid of the denominator.

\large{ \frac{ {x}^{2} }{25} (25) = 16(25)} \\  \large{ {x}^{2}  = 400}

Square both sides and solve the equation.

\large{ \sqrt{ {x}^{2} }  =  \pm{ \sqrt{400} }}

Also don't forget to write "plus or minus" symbol when we are solving a quadratic equation by squaring both sides.

\large{x = \pm{20}}

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2 years ago
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