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3 years ago

If h(x) = -2x – 10, find h(-4). -2 -18 -3 -16

Mathematics

2 answers:

Furkat [3]3 years ago

5 0

Answer:

-2

Step-by-step explanation:

replace x with -4 in the h(x) function

h(x) = -2x-10 ➡ h(-4) = (-2)×(-4)-10 ➡8-10 = -2

Archy [21]3 years ago

4 0

Answer: -2

Step-by-step explanation:

so the original equation is

h(x) = -2x – 10,

but now we know that x =(-4).

so if we plug that into wherever there's an X we get

h(-4) = -2 x -4 – 10

so now we can solve, which is pretty easy

-2 x -4= 8

8 + -10 = -2

And voila we have the our answer -2

very easy

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Step-by-step explanation:

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horrorfan [7]

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Brums [2.3K]

Answer: sqrt(2)/2 which is choice D

======================================================

Explanation

(3pi/4) radians converts to 135 degrees after multiplying by the conversion factor (180/pi).

The angle 135 degrees is in quadrant 2. We subtract the angle 135 from 180 to find the reference angle

180-135 = 45

Then you can use a 45-45-90 triangle to determine that the ratio of opposite over hypotenuse is sqrt(2)/2

sine is positive in quadrant 2

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Alternatively, you can use a unit circle. Refer to the diagram below. In red, I've circled the angle 3pi/4 radians. The terminal point for this angle has a y coordinate of sqrt(2)/2

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3 years ago