Answer:
The diameter is 47
Step-by-step explanation:
Given
--- Circumference

Required
Determine the diameter (d)
The circumference of a circle is:

Make d the subject



Answer:
y= -4x+22
Step-by-step explanation:
slope= -4
-6=-4(7)+b
-4x7=-28
-6=-28+b
28-6=22
so the equation would be y= -4x+22
b=y-intercept
mx=slope multiplied by x
If this were to be put in this form:
the quotient we be on top, or another word the answer. I can't show it on here, but the answer is 165
He made an error is step 2
3x + 18 = 2x +8
subtract 2x from each side
x + 18 = 8