The given formula
Solve for y means we have to make y alone
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Add -10 on both sides, we get
As there is multiplication sign between r and y so to solve for y, divide both side by r
Ms. Clark had 135 cookies. She sold x amount of cookies at the local
1 answer:
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let the two numbers be x and y
From the first sentence,
xy=24
x+y=10
Then make y in equation 2 the subject of the formular and substitute in equation 1
x+y=10
y=10-x
substituting in equation 2
x(10-x)=24
open the bracket
10x-x^2=24
=-x^2+10x=24
Transfer the constant to the left hand side
=-x^2+10x-24=0
Then factorise completely
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