Question

Formula for the perimeter of a rectangle: P = 2a + 2b Solve for b

Formula for the circumference of a circle: C = 2π r Solve for r

Solve 5(z + 6) ≤ 40




(this might get del eted since i'm asking multiple questions, so please answer quick)

Answer 1

b= (2a+P)/2

5(z+6)≤ 40 = z ≤ 2

Answer 2

P=2a+2b
minus 2a
P-2a=2b
divide 2
(P/2)-a=b


c=2pir
divide both sides by 2pi
c/(2pi)=r

5(z+6)≤40
divide both sides by 5
z+6≤8
minus 6z≤2