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Mathematics

2 answers:

Trava [24]3 years ago

7 0

Answer is c because -9 matched the equation and the slope

Elan Coil [88]3 years ago

4 0

Answer: C
Explanation: The y-intercept which is -9 matches with the equation and the slope matches too

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If 2 > -a, then _____. a > 2 a > -2 a < 2 a < -2

FinnZ [79.3K]

Answer:

B. a >-2

Step-by-step explanation:

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3 years ago

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Write as a polynomial (3p–1)(2p+5)–6p(p–2)

julsineya [31]

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3 years ago

Silvio is an air-traffic controller who must calculate the altitude of an incoming plane. He sees the plane at an angle of eleva

Mrac [35]

Since the problem is not telling us the height of Silvio, we are going to assume it is not relevant for our calculations.
Let $h$ the altitude of the incoming plane. We know for our problem that the distance between Silvio and the tower is 3 miles, Also we know that the angle of elevation to the plane is 40°. With this information we can create a triangle as shown in the figure. We need a function that relates the angle of elevation with its opposite and adjacent sides, that function is tangent.
$tan \alpha = \frac{opposite.side}{adjacent.side}$
$tan(40)= \frac{h}{3}$
$h=3tan(40)$
$h=2.5miles$

We can conclude that we should use the trig function tangent to model this situation; also, we can conclude that the equation that describes this situation is $h=3tan(40)$ .