Answer:
13.2 x 7.1 = <u>93.72</u>
Step-by-step explanation:
Answer: 13.2a= 93.72
if a=7.1 you have to plug it into the equation so it would be 13.2(7.1) which is 93.72.
x=4
y=-3
3x+4y=0
2x+5y=7
Change 3x+4y=0 into y= -3/4x
so substitute for y
2x-15/4x=7
-1 3/4x = 7
x=-4
substitue x for y and get
-3/4 * 4
13/20
