For 11, we can subtract x from both sides for the first equation to get y=8-x, making the slope -1 for both equations and therefore making it parallel.
For 13, we can solve for y in the first equation by subtracting 14 from both sides and therefore getting 2x-14=y. For the next one, we can subtract 4x from both sides to get 10-4x=2y. Dividing both sides by 2, we get 10-2x=y. Since for the equations to be parallel they must be the same and for perpendicular they must be -1/(slope), this fits neither.
Using those two explanations, I implore you to solve the other two on your own!
Answer:
170 = 60x + 50 (let x be number of appointments)
Step-by-step explanation:
because the total is 170, it goes behind the equal sign. $50 in tip is added to the amount of appointments so it goes on the other side of the 170. the $60 per appointment goes on the 50's side
Answer:
Scale factor is 3.
Step-by-step explanation:
Change 6% into its decimal form which is 0.06 then multiply it by 500.
500*0.06= 30
30 is the 6% of 500
Answer:
n = -5
Step-by-step explanation:
-2(-7n-8)=-39+3n
Distribute
14n +16 = -39 +3n
Subtract 3n from each side
14n -3n +16 = -39 +3n -3n
11n +16 = -39
Subtract 16 from each side
11n +16 -16 = -39 -16
11n = -55
divide by 11
11n /11 = -55/11
n = -5
