Find the percentage of families who spent: a. Less than $167 per day. b. Less than $367 per day. c. More than $247 per day. d. More than $350 per day. e. Less than $67 per day. f. Between $200 and $300 per day. g. Between $360 and $400 per day. h. More than the median. i.
Answer:
7/4 and 3
Step-by-step explanation:
2x-3y=13 equation (1)
x+2y=-4 equation (2)
multiply equation (2) by -2
-2x-4y=8 now we got equation (3)
Add equations(1) and (3) and combine like terms
2x-2x-3y-4y=13+8
-7y=21
y=-21/7= -3
substitute y with -3 in equation (2) and solve
<span>x+2(-3)=-4
</span>x-6=-4
x= -4+6
x=2
the solution for the system of equations is x=2, y= -3