Answer:
60
Step-by-step explanation:
140 = 80 + z
z = 60

and

Seems like thier perimeters are equal.
3x*6
you will add 2x plus one x then 4 - -2
Answer:
x=-1 y=2
Step-by-step explanation:
Use Elimination or Substitution (Elimination shown below)
6x+5y=4
6x-7y =-20 <- Multiply by -1
-6x+7y=20
12y = 24
y=2
Plug back into either of the equations and solve for x.
6x + 10= 4
6x = -6
x = -1
Double check work:
-6+10 = 4
Answer: $714.35
Step-by-step explanation: First, you have a coupon for 20% off. Next, Best Buy also have a promotion discount for an additional 15% off. After you add all the discounts, you will have 35% off. 35% of 1099 is 384.65, so you will take 384.65 off of the original price, 1099. 1099-384.65 is equal to $714.35