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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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Wendy wants to put a wallpaper border around her bedroom. The room has two walls that each measure 10 feet 5
cestrela7 [59]

Answer:

11 yards

Step-by-step explanation:

The room has two sides both measuring 10 feet 5 inches. This gives a total of 20 feet 10 inches. It also has the other two sides both measuring 6 feet 1 inch and that too gives a total of 12 feet 2 inches. Adding them all together results in 32 feet 12 inches. Better still, the perimeter of the room is derived as;

Perimeter = 2 (L + W)

Perimeter = 2 (10'5" + 6'1")

Perimeter = 2(16'6")

Perimeter = 32'12"

Having in mind our conversion rate of 12 inches equals 1 foot, the results can be properly expressed as 32 feet plus 1 foot which gives us 33 feet.

If the perimeter of Wendy's room is now given as 33 feet, the conversion rate between feet and yards can now be applied. Having been given that

3 feet = 1 yard

Then 1 yard = 3 feet/3, that is

y = 3/3

Hence,

y = 33/3

y = 11

The results show that Wendy would needs to buy a total of 11 yards of wallpaper border.

3 0
3 years ago
What are all of the factors for 100 and 73. Please help with them and write them separate. thanks.
Zolol [24]
The factors of 100 are 1, 2, 4, 5, 10, 20, 25 50 and 100
the factors of 73 are 1 and 73. 73 os a prime number
6 0
2 years ago
Round 6.487 and 2.049 to the hundredths place.<br><br> What is the sum of the rounded numbers?
sergey [27]

Hello there! 6.487 rounded to the nearest hundredths place is 6.49 and 2.049 rounded to the hundredths place is 2.05. The sum of these numbers is 8.54.

Remember: If the number value after the value you are rounding is equal to or greater than 5, round up. If it is less than 5, round down.

With this in mind, let's round the numbers:

First: 6.487 rounded to the hundredths place would be 6.49, since 7 is greater than 5.

Second: 2.049 rounded to the hundredths place would be 2.05, since 9 is greater than 5.

Next, we will add the numbers together

2.05 + 6.49 = 8.54.

So, this is our final answer. I hope this answers your question & have a great day! :)

3 0
3 years ago
Which process cannot happen?
andrezito [222]
C. Metamorphic rock -> melting -> solidification
8 0
2 years ago
Read 2 more answers
For which equations is x = 9 a possible solution? Check all that apply
Studentka2010 [4]

Answer:

|x| =9           yes

-|x|=9           no

-|-x|=9          no

-|-x|=-9         yes

|x|=-9           no

|-x|=9            yes

|-x|=-9         no

5 0
2 years ago
Read 2 more answers
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