We are given 85
Firstly, we will find all possible factors of 85
we can write it as
so, exponential form is
................Answer
The weight of a boy was 15kg last year. If his weight increases by 3kg this year, find the percentage increase in his weight.
1 answer:
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ANSWER
The solution is
x=-3,y=-2
EXPLANATION
First equation
3x – 3y = –3
Second Equation:
5x – y = –13
Multiply the second equation by 3 to get:
Third equation:
15x-3y=-39
Subtract the first equation from the third equation:
Divide both sides by 12,
Put x=-3 into the first equation:
Group like terms,
The solution is
x=-3,y=-2