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slavikrds [6]
3 years ago
9

90 juniors took different SAT-II tests. 40% more students took the Chemistry test than took the History test, and 50% more stude

nts took the Math test than took the Chemistry test. How many students took each test?
Mathematics
1 answer:
erastovalidia [21]3 years ago
4 0

Answer:


Step-by-step explanation:

4.5x=90

x=20 history

28 chemistry

42 math

They add to 90.  


History test=x

Chemistry test=1.4x

Math test=(1.5)(1.4)=2.1x

They add to 90

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The sides of the right-angle triangle will be 16 units and 20.30 units. And the missing angle will be 52°.

<h3>What is a right-angle triangle?</h3>

It's a form of a triangle with one 90-degree angle that follows Pythagoras' theorem and can be solved using the trigonometry function.

The side AC will be

tan 38° = 12.5 / AC

      AC = 15.999

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Then the side AB will be

AB² = 12.5² + 16²

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We know that the angle sum is 180 degrees. Then we have

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More about the right-angle triangle link is given below.

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2 years ago
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konstantin123 [22]
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4 0
3 years ago
Please help me anyone
kotykmax [81]

Answer:

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Step-by-step explanation:

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Answer:  \frac{1}{16}

Step-by-step explanation:

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Im sorry if it isnt good.

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