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Vlad1618 [11]
3 years ago
6

Pete’s Electric charges $75 plus $30 per hour of work while Greg’s Electric charges $45 plus $45 per hour. How many hours must e

ach electrician work for them to charge the same amount?
Mathematics
1 answer:
viktelen [127]3 years ago
8 0
H: hours
45h + 45 = 30h + 75
15h + 45 = 75
15h = 30
h = 2 hours

45 ( 2 ) + 45 = 30 ( 2 ) + 75
90 + 45 = 60 + 75
135 = 135

Therefore the awnser is 2 hours.

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If a 150 pound woman would receive 24 grams of a certain medicine. How many grams should a 120 pound woman receive?
kumpel [21]

With a problem like this, set up a proportion (like when making lemonade from a mix).


\frac{weight}{medicine} = \frac{weight}{medicine} is our proportion.


We fill in the the two weights and the 24 grams of medicine in the proportion and solve for the fourth piece not there.


\frac{150}{24} =\frac{120}{M}


We shorten medicine to M and we solve for M by cross multiplying.


150M = 2880


M = \frac{2880}{150} = 19.2 grams


The woman should get 19.2 grams of medicine.



7 0
4 years ago
Will mark brainleist+20 points <br> Find the value of x for the following triangle below.
LuckyWell [14K]
Your answer would be 135.

This is because angles on a straight line add up to 180°, and so we need to subtract 45 from 180, which gives us 135.

I hope this helps!
6 0
3 years ago
Read 2 more answers
James drives a distance of 320 miles in 4 hours. What was his speed?
Nataly_w [17]

Answer: D

Step-by-step explanation:

because 320/4 = 80 mi/hr because it can not km or min and hr^2 would not make any sense

5 0
3 years ago
If the slope of ac is 6 what is the slope of bc
Yuki888 [10]

Answer:

???

Step-by-step explanation:

4 0
3 years ago
The graph below shows the distances, in miles, that a dragonfly can travel in a certain number of hours:
Murrr4er [49]

Answer:

  (b) distance, y=20x, 480 mi

Step-by-step explanation:

As is often the case, the only self-consistent answer choice is the correct one.

__

The dependent variable is plotted on the y-axis, so is distance.

(x, y) = (2, 40) tells you y = 20x is an appropriate choice of equation.

In 24 hours, the dragonfly will fly y = 20(24) = 480 miles.

8 0
3 years ago
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