Answer:
Step-by-step explanation:
The answer would be -2842 hope i helped good luck :)
a = hours worked by the first mechanic
b = hours worked by the second mechanic.
since the first mechanic charges $55 per hour, then for "a" hours that'd be a total of 55*a or 55a, likewise, for the second mechanic that'd be a total charge of 80*b or 80b.
we know all hours combined are 15, so then a + b = 15.
we also know that all charges combined are $950, so 55a + 80b = 950.
Answer:
12.25 cm²
Step-by-step explanation:
(3.5 cm)² = 12.25 cm²
Factor them
19x^7=19*x*x*x*x*x*x*x
3x^5=3*x*x*x*x*x
common group is x*x*x*x*x or x^5
gcf is x^5