Answer:
x = -57/14, y = -6/7
Step-by-step explanation:
2x + y = -9
-(2x - 5y = -3)
-------------------- (Add the two equations together)
7y = -6
y = -6/7
2x - 6/7 = -9
2x = -57/7
x = -57/14
Step-by-step explanation:
20 men work 8 hours a day for 18 days.
that are
20×8×18 = 2880 work hours to complete that work.
if 24 men work 5 hours a day, that are
24×5 = 120 work hours per day.
we still need to do the total 2880 work hours.
so, they will need
2880 / 120 = 24 days to complete the work.
Answer:
3 is equvalent...........
Simplify the radical by breaking the radicand up into a product of known factors.<span>x<span>4 is your answer!</span></span>
Answer:
C. 9/8
Step-by-step explanation:
Use KCF which means Keep the first fraction, Change the second fraction by flipping it and change the division sign to a multiplication symbol:
multiply the numerator together:
6 × 12 = 72
multiply the denominator together:
8 × 8 = 64
now the fraction is:
simplify further by dividing both numbers by 8:
72 ÷ 8 = 9
64 ÷ 8 = 8
so the fraction is 9/8
