Answer:
B
Step-by-step explanation:
5a^2 - 44 = 81 Add 44 to both sides
5a^2 = 81 + 44 Collect like terms
5a^2 = 125 Divide both sides by 5
a^2 = 125/5
a^2 = 25 Take the square root of both sides
√a^2 = √25
a = +5
a = -5
The answer is B
IF MARTHA EARNS 3.25/HOUR FRO BABYSITTING (SHE IS UNDERPAID!)
IN 1.5 HOURS=3.25*1.5=4.88 DOLLARS
IN 2.5 HOURS=3.25*2.5=8.13 DOLLARS
IN 3.5 HOURS=3.25*3.5=11.38 DOLLARS
37.5 and 2.5. Divide each other and you get 15.
Answer:
C = 96.71 inches
A = 745.06 in ^2
Step-by-step explanation:
d = 30.8
The radius will be 1/2 d= 1/2 (30.8) = 15.4
The circumference = pi *d
= pi * 30.8
=96.761
The area = pi * r^2
= pi * (15.4)^2
= 745.06011
