Step-by-step explanation:
A(x) = x² + 10x -75
= (x + 15)(x - 5)
Answer:
9
Step-by-step explanation:
3+3+3=9
there you go :)
Answer:
M = (1.5, 0.5)
Step-by-step explanation:
Use the midpoint formula to find the midpoint between two points
Answer:
at least three are dimes
so we have 20 coins with a total of 3.50
if the rest are all quarters then there would be 4*3+2=14 but we need 20
so we are 6 short
we must have dimes in multiples of 5
12 q + 5 d=3.50 but only 17 coins
10q +10 dimes=3.50 with 20 coins
10 q +13 dimes total
algebraic solution
d+q=23
25q+10d=380
d=23-q