PLEASE HELP I’M SO CONFUSED

Mathematics

1 answer:

bekas [8.4K]3 years ago

5 0

Answer:

a. $45 an hour

b. 5.25 hours

Step-by-step explanation:

a. The plumber charges $75 per job, so it is irrelevant to the number of hours they work. 45(h) is $45 multiplied by the number of hours they work.

First, plug the numbers into the equation, the cost being C(h):

311.25 = 45(h) + 75

Next, subtract $75 as it is a set price that is always payed:

236.25 = 45(h)

Then, divide both sides by 45 to find how many hours were worked:

h = 5.25

Hours = $5.25

You might be interested in

If a rectangular field is 27 meters long and 18 meters wide , if fencing costs $12 per yard how much will it cost to enclose the

melomori [17]

bearing in mind that 1 yard = 0.914 meters, so therefore 27 meters is then 27/0.914 yards and 18 meters is 18/0.914 yards

$\bf \stackrel{27~meters}{\cfrac{27}{0.914}yd}\cdot \stackrel{18~meters}{\cfrac{18}{0.914}yd}\qquad \approx\qquad 581.76~yd^2 \\\\\\ \stackrel{\textit{total price}}{(581.76)(12)}\implies 6981.12$

3 0

3 years ago

Read 2 more answers

uppose you are asked to find the area of a rectangle that is 2.1-cm wide by 5.6-cm long. Your calculator answer would be 11.76 c

r-ruslan [8.4K]

Significant figures and decimal places are different things. If this were to be rounded to 2 DP you would be right, however Significant figures are to do with units. In this case, it would be 12cm^2

5 0

4 years ago

Which statement about the ordered pairs (2, - 9) and (3, - 6) are true for the equation

NemiM [27]

Answer: its not completed so half but the answer is 15x39

Step-by-step explanation: because y = 15x39

4 0

3 years ago

Read 2 more answers

Helppppppppppppppppppp please

riadik2000 [5.3K]

I have worked out the answer to the question, I hope it helps you. Please do not forget to check if this answer if reliable, I am not always correct