Answer:
<em>The student completed 13 courses worth 3 credits</em>
Step-by-step explanation:
<u>System of Equations</u>
Let's assign the following variables:
x = number of courses worth 3 credits
y = number of courses worth 4 credits
Some student completed 18 courses thus:
x + y = 18 [1]
The student earned a total of 59 credits:
3x + 4y = 59 [2]
From [1]:
y = 18 - x
Substituting in [2]:
3x + 4(18 - x) = 59
Operating:
3x + 72 - 4x = 59
Simplifying:
-x = 59 - 72 = -13
x = 13
The student completed 13 courses worth 3 credits
Answer:
photomath, assistant in mathematics, will decompose everything and give the correct answer.
Well, the diameter doesn't matter in this problem because we allready know how fast, and how much the pool is filling. So, 6 inches is half of a foot, because 1 foot = 12 inches, and six is half of 12. If it take 1 hour for the pool to fill 1/2 of an foot, than it takes 2 hours for a full foot. Next, we multiply 2 hours, by 1 foot, and convert the 1 foot, to 4 feet. Which means to figure out the number of hours, we have to times 2 hours by 4 feet. And that is 8.
So the answer is: 8 feet.
I hope this helped! Please mark brainliest!
Answer:
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