Answer:
Answer is -299/20 which is -14 19/20 in simple mixed number...hope it helps:)
Answer: Robin has 50 nickels, 60 dimes, and 120 quarters.
Step-by-step explanation:
If the sol'ns are -9 and 9, then we can use this to form our eq'n:
(x - 9)(x + 9) = 0
x^2 - 81 = 0
so...
x^2 + z - 103 = x^2 -81
z - 103 = -81
z = -81 + 103
z = 22
Marked down 20% means it is selling for 80% of the original price ( 100% - 20% = 80%)
Multiply the original price by 80%
270 x 0.80 = $216.00
Answer:
2
Step-by-step explanation: