Answer: x=45
Step-by-step explanation:
60/120=x/90
1/2=x/90
Given that you know that x is gonna be half 90.
So 45. Then plug it in
60/120=45/90
1/2=1/2
Or do it like
60 = x
120 90
5400=120x
Then divide 120 by 5400
5400÷120=45
The sale price of the laptop is $1100. The discount amount is $900.
Question 1)
Gwen has already burned 100 calories when Tristan and Keith started, and he continues to burn 10 calories per minute. The equation for Gwen is
y = 100 + 10x
Question 2)
`Tristan is burning 125 calories every 10 minutes. His burning calories rate is 12.5 calories per minute. The equation for Tristan is
y = 12.5x
Question 3)
Keith is burning 300 calories in 30 minutes. His rate per minute is 10 calories per minute. The equation for Keith is
y = 10x
This is an example of a composite function which can be simplified to g(fx). Literally input f(x) into the x of g(x), leading to the answer of 80x^2-120x+42
