Answer:
x=-3
y=6
Step-by-step explanation:
5x+2y=-3 3x+3y=9
3x=9-3y
x=3-y
5(3-y)+2y=-3
15-5y+2y=-3
18=3y
6=y
x=3-y
x=3-6
x=-3
Answer:
19 throws.
Step-by-step explanation:
For her success rate to be 80% in 37 throws she must make 0.8 * 37
= 29.6 throw - that is 30 to nearest throw.
So for the next 20 throws she must make 30 - 11 = 19 throws.
He will receive $480 in interest in the first year.