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IgorLugansk [536]
3 years ago
15

How do you solve this using substitution -8x-y=-30 Y=12x-50

Mathematics
1 answer:
never [62]3 years ago
7 0

Step-by-step explanation:

substitude the y value into y in the first equation

-8-(12x-50)=30

-8-12x+50=30

you see it?

then solve

-8+50-30=12x

you got the value = 12x

then you divide with 12

finally you get x

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8 0
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Increase £110 by 10%
UNO [17]

Answer:

121

Step-by-step explanation:

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By what percent will the product of two numbers change, if the first number increases by 70%, while the second number decreases
FinnZ [79.3K]

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Step-by-step explanation:

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The new number is

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Percent increase is  new - original divided by original  times 100%

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                                -----------------  * 100%

                                 xy  

                           = .02 xy

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5 0
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