Answer:
A = x^2 + 4x -21
Step-by-step explanation:
L = x+7
W = x-3
A = L*W
A = (x+7)(x-3)
A = x^2 + 4x - 21
Answer:
45%
Step-by-step explanation:
Answer: 0.5 inch
Step-by-step explanation:
Given
On hammering nail advances
each time
Annalee hammered 4 times
So, total advancement of nail= 
Answer:
60 mph
Step-by-step explanation:
mph=miles/hours
240/4=60
60 miles per hour
Answer:
4.485 × 〖10〗^10 x 1.3268 × 〖10〗^11 =
(4.485 x1.3268) ×( 〖10〗^11× 〖10〗^10)
5.950 x 〖10〗^21
Step-by-step explanation: