Gabriel took a math test and scored an 80. He got 4 questions wrong and lost 20 points. How many points were each item?

Each question was worth 5 points.

Step-by-step explanation:

If every question had the same worth, then that would be easier to calculate.

First divide the points he lost by how many questions.

20 ÷ 4 = 5

Now we have it! Each question is worth 5 points!

But if you want to find how many questions in total the test had, we can do that too!

100 ÷ 5 = 24

The test had 24 questions!

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b) k’(6, 4); l’(3, 3)

step-by-step explanation:

a 270° clockwise rotation maps every point (x, y) to (y, -x). (it negates the x-coordinate and then switches it and the y-coordinate.)

this means the endpoints of the side congruent to kl, k' and l', would be mapped as:

k'(-4, 6)→(6, 4)

l'(-3, 3)→(3, 3)