Answer:
1/ -2.65
2/ 1/8
3/ 14.28
4/ -7.9
Step-by-step explanation:
Just add and subtract.
Answer: A statistical question anticipates variability in the response and can be answered by collecting data.
Step-by-step explanation:
Answer:
x ≥ 90
Step-by-step explanation:
it says 90 or higher which also means "at least 90", which means greater than or equal to 90.
2x+y=6
y=6-2x and y=x^2-4x+3
The solution occurs when they are equal so we can say y=y which is:
x^2-4x+3=6-2x add 2x to both sides
x^2-2x+3=6 subtract 6 from both sides
x^2-2x-3=0 factor
(x+1)(x-3)=0
So x=-1 and 3, using y=6-2x we find the corresponding y values...
y(-1)=6--2=8, y(3)=6-6=0 so the two solutions are the points:
(-1,8) and (3,0)
