Answer:
f(2) is -3
f(-4) is 2
for the last one, x = -2
Step-by-step explanation:
25x+30x= 1625
x+y= 60
Put into calculator and you get
x=35 y=25
7x^2-3x - (3x^2 +4x -5) multiply negative one across the entire second term
7x^2 - 3x -3x^2 -4x +5
4x^2 -7x +5
6 = 18
—. ——
3. 9
This is for a
__
Answer:
m = 10
Step-by-step explanation:
According to the picture attached, we can see the angles formed.
The angle on the top (5m+100) is sided with the angle 2m+10. This means that they are supplementary angles, their sum is 180°.
So,
5m+100+2m+10 = 180
5m+2m=180-100-10
7m = 70
m = 10