First solve for x in the first equation
x + 7y = 0
x = -7y
since x = -7y we can substitute -7y into the other equation wherever there is an x
2x - 8y = 22
2(-7y) - 8y = 22
-14y - 8y = 22
-22y = 22
y = -1
Now let's substitute -1 back into either of the original equations so we can solve for x
x + 7y = 0
x + 7(-1) = 0
x - 7 = 0
x = 7
So your solution set is
(7, -1)
Answer
396 miles and $28.71
Answer:
if it is a regular quadrilateral and each angle is equal then its 90 degrees
Step-by-step explanation:
Answer:
15 girls
Step-by-step explanation:
Girls : Boys
5 3
To get to 9 boys multiply by 3
Girls : Boys
5*3 3*3
15 9
There are 15 girls
Answer:
son 71⁰ y 35'
Step-by-step explanation:
un complemento son 89⁰ por lo tanto 89-18=71
y son 60' 60-25=35
