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Readme [11.4K]
3 years ago
14

The a value of a function in the form f(x) = ax2 + bx + c is negative. Which statement must be true?

Mathematics
1 answer:
Serhud [2]3 years ago
7 0
"a "and "b^2-4ac" must be negetive
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1035.33156649 meters high is the helicopter flying over the building.

Given that, an observer (O) is located 900 feet from a building (B). The observer notices a helicopter (H) flying at a 49° angle of elevation.

We need to find how high is the helicopter flying over the building.

<h3>How to find the height of the building using trigonometry?</h3>

To measure the heights and distances of different objects, we use trigonometric ratios.

Here, use the Tangent rule to calculate the height of the building.

tan(angle) = opposite/adjacent

Now, tan 49°=h/900

⇒h=1035.33156649 meters

Therefore, 1035.33156649 meters high is the helicopter flying over the building.

To learn more about the angle of elevation visit:

brainly.com/question/21137209.

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What is the equation of the horizontal line that passes through (-4, 6)
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The answer would be y=6

Step-by-step explanation:

This is because when we are looking at horizontal lines, we look at the y-coordinate to determine a line because the y-axis is what determines height.

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A submarine sits at –300 meters in relation to sea level. Then it descends 115 meters. What is its new position in relation to s
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