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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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Please please please help me
Zinaida [17]

Answer:

z=20 and y=38

Step-by-step explanation:

6 0
3 years ago
Estimate by rounding to the nearest ten. Then, find the sum<br> 376+266<br> The estimated sum is
harina [27]
The answer should be found by rounding 376 to 380 and 266 to 270....you will get 650
3 0
2 years ago
Read 2 more answers
Evaluate<br> 13- (-9)<br><br> need helpp
Viktor [21]

Answer:

The answer is 22.

Explanation:

Multiply -1 by -9.

13 + 9

Add 13 + 9.

22

<u>Therefor</u><u>,</u><u> </u><u>the</u><u> </u><u>answer</u><u> </u><u>is</u><u> </u><u>22</u>.

6 0
2 years ago
The pair of points (g, -1) and (2, 5) lie on a line with a slope of 3/2. What is the value of g?
Sliva [168]

Answer:

\huge{ \boxed{ \bold{g =  - 2}}}

Step-by-step explanation:

In order to find g we have to use the formula for finding the slope of the line passing through two points that's

m =  \frac{y_2 -y_ 1}{x_2 -x_1 }  \\

where

(x1 , y1) and (x2 , y2) are the points

From the question the points are (g, -1) and (2, 5) and m = 3/2

We substitute it into the equation and find g

That's

\frac{3}{2}  =  \frac{5 -  - 1}{2 - g}  \\  \frac{3}{2}  =  \frac{5 + 1}{2 - g }  \:  \:  \:  \:  \:  \:  \:  \frac{3}{2}  =  \frac{6}{2 - g}  \\  \\ 3(2 - g) = 6(2) \\ 6 - 3g = 12 \\  - 3g = 12 - 6 \\  - 3g = 6 \\  \\  \frac{ - 3g}{ - 3}  =  \frac{6}{ - 3}  \\  \\ g =  - 2

We have the final answer as

<h3>g = - 2</h3>

Hope this helps you

7 0
1 year ago
A burro is standing near a cactus. The burro is 58 in. tall. His shadow is 4 ft long. The shadow of the cactus is 8 ft long. Wha
Sever21 [200]

To find the height of the cactus, make a ratio.

58 inches divided by 4 feet equals x inches divided by 8 feet.

58/4 = x/8

14.5 = x/8

116 = x

The height of the cactus is 116 inches.

8 0
3 years ago
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