80 since he starts off with 38 stamps then gains 6 each month for 7 months (6x7=42) so 42+38=80
Answer:
Step-by-step explanation:
Y=-2x+2.....(1)
Y=-2x-2.....(2)
Subtracting (1) from (2)
Y - Y = -2x - (-2x) -2 - 2
O = -2x + 2x - 4
O = 0 - 4
Hence it as no solution the the two variables tend to zero
Answer:
x=3
Step-by-step explanation:
5x+6=21
5x=15
x=3
Answer:
75.76%
Step-by-step explanation:
X2+2x-15=0
2x+2x-15=0
4x-15=0
4x=15
so answer is x= 15/4
