Answer:
the answer is
9b²-3b
Step-by-step explanation:
9b-3
2,500 subtracted by 372 equals 2148. 2148 dollars is how much savings he has left.
1) in one minute for first wiil be 1/20
the other 1/30, it means that A paint in one minute 1/20 and B 1/30 then A+B in one minute 1/20 + 1/30 = 3+2/60 = 5 / 60, 5/60 = 1/12
if in one min they make 1/12 then in 12 min they paint all the wall
CscA = 1/sinA
CosACscA = cosA × 1/sinA = cosA/SinA = cotA
