8x + 84 = 500
8x = 416
x = 52
So if he wants to earn more than 500 dollars, he needs to make more than 52 dollars a week.
Answer:
Parallel: a and b, p and q, p and r, q and r
PErpendicular: p&a, p&b, q&a, q&b, r&a, r&b
Step-by-step explanation:
Parallel lines have the same slope so both of the lines would be going in the same direction and will never cross each other.
Perpendicular lines cross at a 90 degree angle.
Technically you do not know if q&a and q&b are perpendicular because you do not know if there is a 90 degree angle
Savings account, retirement savings, value of second car, balance in checking account i believe those are the only ones not positive though
Answer:
9
Step-by-step explanation:
6x + 2y = 30
9x - 4y = 3
if we double the first equation and add up to second one, we cancel 4y:
- 12x+9x=60+3 ⇒ 21x=63 ⇒ x=3
now we can find y:
- 6*3+2y=30 ⇒ 2y= 30- 18 ⇒ 2y= 12 ⇒ y=6
finally, x+y
