Answer:it is D)172 in the khan academy answers
Step-by-step explanation:
Answer:
10
Step-by-step explanation:
10 workers working 2 hours a day is 2*10=20 work hours per day
2 workers working 5 hours a day is 2 *5=10 work hours per day
Per day 1/2 as many work hours so will take 2 times as long.
5*2 = 10 days
Answer:
20% off 45.00 is 36.00
Step-by-step explanation:
The difference is $9.00
2n=n-5 subtract n from both sides
n=-5
check...
2(-5)=(-5)-5
-10=-10
f(x) = -10
set the equation equal to -10 and solve for x:
-10 = -x-1
Add 1 to both sides:
-9 = -x
Divide both sides by -1:
x = 9
