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Y_Kistochka [10]
3 years ago
13

A college student completed some courses worth 3 credits and some courses worth 4 credits. The student earned a total of 59 cred

its after completing 18 courses. How many courses worth 3 credits did the student complete?
Mathematics
1 answer:
DedPeter [7]3 years ago
5 0

Answer:

They completed 13, 3 credit classes

Step-by-step explanation:

1. Make 2 formulas. In this case: x+y=18

and 3x+4y=59

2. Then multiply x+y=18 by 3 and subtract the two equations.

Find y which is 5 and input into the equations. Then find your answer.

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Answer:

A

Step-by-step explanation:

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Spiral Review (Reviews 2.G.A.1, 2.G.A.3, 3.0A.0.9)
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The Identity Property

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8 0
3 years ago
If the experiment is consisting of rolling a fair die once, find:
Eva8 [605]

1)1,2,3,4,5,6

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3 years ago
Katie went to buy a new tv and finds one for $550.00. In the state of Texas, there is a 6% sales tax on items. How much did Kati
kvv77 [185]

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6% is equal to 0.06, so you multiply 550 by 0.06.  which equals 33. Then, because it asks for how much Katie played, including the tax and TV, you add 33 to 550.

8 0
4 years ago
The initial cost to drill a well is $210000. the daily rate to operate the well is $500. The current selling price is $65 per ba
SVETLANKA909090 [29]

Hi there!

There is an initial cost of $210,000 (which you're just going to pay once)

Then it costs $500 per day to operate.

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f(x) = 500x + 210,000


There you go! I really hope this helped, if there's anything just let me know! :)

8 0
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