Answer:
Step-by-step explanation:
Adding both equations
4x+5y+5y-4x=19+38
10y = 57
y= 5.7
Subtracting equation i from ii
5y-4x-4x-5y=38-19
-8x=9
x= -0.9
One is 25/20,another one is 20/16
4 years
using I = PRT
then T =
calculate PR = 1300 × = 74.75, hence
T = = 4 years
Answer:
1
Step-by-step explanation:
Since the coefficient of x is always double the second number in a squared binomial -> (x-1), -2 is double -1. -1 squared gives you 1.