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Pavel [41]
2 years ago
15

Landon scored an 85% on his test. If he got 34 problems correct, how many were on the test?

Mathematics
1 answer:
Sergeu [11.5K]2 years ago
6 0

Answer:

There are 40 problems on the test

Step-by-step explanation:

Let p = the number of problems on the test

The number of problems on the test times the percent correct is the number correct

p * 85% = 34

p * .85 = 34

Divide each side by .85

p * .85/.85 = 34/.85

p = 40

There are 40 problems on the test

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Answer:

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Step-by-step explanation:

Note that the side length x is opposite of the right angle, which means that it is the hypotenuse, which will usually be denoted as c.

Set the equation:

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let:

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Plug in the corresponding numbers (& x) to the corresponding variables:

(5)² + (12)² = (x)²

Simplify. First, solve for the power, and then add:

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x² = (5 * 5) + (12 * 12)

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Next, root both sides of the equation:

√x² = √169

x = √169 = √(13 * 13) = 13

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Note the rules, and it should be easier:

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Answer:

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