Best Answer: Bill's time to do the whole job, B
Jeff's time, B + 5
time they actually work, 6.
6/B + 6/(B+5) = 1
6(B+5) + 6B = B(B+5)
6B + 30 + 6B = B² + 5B
B² - 7B - 30 = 0
(B - 10)(B + 3) = 0
B = 10 or B = -3, and we reject the negative solution.
the equation is based on adding the fractions of the whole job each does. if Bill takes B hours to do the whole thing and works 6, he does 6/B of the job. similarly for Jeff.
in the 2nd problem,
a = time of experienced accountant
2a = time of new accountant
10 = time each actually works
10/a + 10/(2a) = 1 ........ multiply all by a
10 + 5 = a
a = 15 hr.
Answer: the false statement is c
Step-by-step explanation:
The graph of the amount earned for number of lawns mowed versus number of lawns mowed is sketched in the attached photo.
From the graph,
a) Money earned is graphed on the y-axis
b) The slope of the line can be used to estimate how much money Jared earns per lawn
d) Jared graphed the number of lawns mowed on the x-axis
The false statement is
c) Jared earns on average 14 dollars per lawn
Answer:
$18.20/0.65=28 minutes
Step-by-step explanation:
$18.20 was the cost of the rental divide it by the cost per minute and that will give you the total number of minutes used which is 28.
Answer:
the answer would be 0.
Step-by-step explanation:
the line would go straight down the middle.
Answer:
I think the answer is x≥−34
Step-by-step explanation:
