(Sorry I could only answer part A) The Answer is 84 -w-
Answer:
6/7
Step-by-step explanation:
x +(-x) =0
5+1= 6
2+5= 7
hopefully that's all correct
Answer:
6
Step-by-step explanation:
90/7 divided by 1 3/4 is 7.34 so the closest one to it is 6
Eay peasy
solve graphically
graph them and find the poitn that they intersect at
y=mx+b
m=slope
b= y intercept
y=7x-9
slope=7
yintercept=-9
y=3x-1
slope=3
yinercept=-1
I have attached graph below
easier way would be to simply sub them and solve
7x-9=y=3x-1
7x-9=3x-1
4x-9=-1
4x=8
x=2
y=3x-1
y=3*2-1
y=6-1
y=5
(2,5) is solution