Answer:
z=-3
Step-by-step explanation:
42 = -7z+21
-7z=21
z=-3
Answer:
1. 3x + 6
2.
or 7.071
3. 
Step-by-step explanation:
1. 3 consecutive even integers
If the first is x, the 2nd is x+2, and the 3rd is x+4
x + (x+2) + (x+4)
= 3x + 6
2. The equation for circumference is

If the diameter is 
The the radius is half of that.
So the circumference is

3. To divide we multiply by the reciprocal. So flip the fraction that we are dividing by.

Thickness of the plate before polishing = 2.342
Thickness of the plate after polishing. = 2.087
How much was removed = 2.342- 2.087 = 0.255
Hence , the answer 0.255 which is option B
3x<3+4x<2
3x-3<4x<-1
-3<x<-1
Answer:
the y intercept would be 4 pr (0,4)