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Korolek [52]
3 years ago
9

There were 100 questions on a math test. If Jamal got 4 times as many right as he got wrong, what was Jamals score?

Mathematics
1 answer:
IgorLugansk [536]3 years ago
7 0

Jamal's score is 80

<u>Explanation:</u>

Given:

Number of questions = 100

Let w be the number of wrong answers

Let r be the number of right answers

According to question,

r = 4w

r + w = 100

Solving both the equations we get:

4w + w = 100

5w = 100

w = 20

If w = 20 then r = 4 X 20 = 80

Therefore, Jamal's score is 80

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kykrilka [37]
Hey!
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Triangles: 
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same thing for the second one
15/2 * 2 = 15
Don't forget, there are 2 triangles so it's really 15 for both

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A= 7*5
A=35

A=7*5
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A=3*7
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35+35+21=91

Now add the sum of the area of the triangles and the sum of the area of the rectangles

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Hope this helps!
5 0
3 years ago
Solve for k: -3k -3k = -29 + 77
sineoko [7]

Answer:

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Step-by-step explanation:

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6 0
3 years ago
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STALIN [3.7K]

Answer:

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8 0
2 years ago
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tankabanditka [31]
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8 0
3 years ago
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