M² - 12m + 20
m² ⇒ m * m
20 ⇒ - 10 * -2
(m - 10)(m - 2)
m(m - 2) - 10(m-2)
m² - 2m - 10m + 20
m² - 12m + 20
m - 10 = 0
m = 10
m - 2 = 0
m = 2
So he worked 30.5 hours, he just didn't write some of the hours down. To find the hours he didn't write down, you subtract 8+

+

from 30.5, which equals
Answer:
the unit cost per rubber tile is $$$$$$$$$$$$$6
Step-by-step explanation:
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Answer:x=26
Step-by-step explanation:
Answer:
c.
Step-by-step explanation: