Write the value of the expression.
1 answer:
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Answer:
Rate of Pay is $11 per hour.
Step-by-step explanation:
Cost of of work = $ 82.50
To find: Rate of pay
Here Rate of Pay means Cost of 1 hour of work or we can say cost of per hour work.
⇒ Cost of of work = $ 82.50
Cost of 1 hr of work =
=
=
= $ 11
Therefore, Rate of Pay is $11 per hour.
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
Look at the photo above
