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I am Lyosha [343]
3 years ago
13

What is the value of x? A. 2 Units B. 3 Units C. 5 Units D. 8 Units

Mathematics
1 answer:
Fudgin [204]3 years ago
7 0

You need the formula for geometric mean for right triangles as it applies to the altitude. For us, that formula will be \frac{BD}{AD}=\frac{CD}{BD} where BD is your altitude. The formula then, filled in accordingly, would be \frac{10}{x}=\frac{4x}{10}. We cross multiply to get that 4x^2=100. Divide both sides by 4 to get x^2=25, so x = 5. Choice C is the one you want.

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A hockey puck strikes a wall at an angle of 30 degrees. the puck then travels away from the wall at the same angle.
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Two or more angles whose sum is 180° are called supplementary angles. The measure of the ∠y is 120°.

<h3>What are supplementary angles?</h3>

Two or more angles whose sum is 180° are called supplementary angles. If a straight line is intersected by a line, then there are two angles form on each of the sides of the considered straight line. Those two-two angles are two pairs of supplementary angles. That means, that if supplementary angles are aligned adjacent to each other, their exterior sides will make a straight line.

Given the puck strikes the wall at an angle of 30°, it goes away at the same angle of 30°. Therefore, the measure of angle y can be found using the sum of the angle as a supplementary angle. Thus, we can write,

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60° + ∠y = 180°

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Hence, the measure of the ∠y is 120°.

Learn more about Supplementary Angles:

brainly.com/question/2882938

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5 0
3 years ago
45% grass and the rest paved. how much is paved?
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What is 3 miles per minute expressed in feet per minute? Recall that 1 mile is 5,280 feet.
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Step-by-step explanation: Brainliest, Please and Thank you :)

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Read 2 more answers
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