3 years ago

Multiply 2x(4x^2+x+3)

Mathematics

1 answer:

Marina CMI [18]3 years ago

7 0

Answer:

8x^3+2x^2+6x

Step-by-step explanation:

2x(4x^2+x+3)

using distribution -

8x^3+2x^2+6x

hope this helps!!

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Is 12 a solution to the equation × - 8 = 20? Explain how you know.

jeyben [28]

We have the following:

$x-8=20$

solving for x

$\begin{gathered} x=20+8 \\ x=28 \end{gathered}$

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1 year ago

Please help with i am all ready late to turn it in

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Answer:

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2.62

Step-by-step explanation:

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3 years ago

From a radar station, the angle of elevation of an approaching airplane is 32.5 degree. The horizontal distance between the plan

denis23 [38]

Answer: 42.21 km

Step-by-step explanation:

We can solve this using trigonometry, since we have the following data:

$\theta=32.5\°$ is the the angle of elevation

$d=35.6 km$ is the horizontal distance between the plane and the radar station

$x$ is the hypotenuse of the right triangle formed between the radar station and the airplane

Now, the trigonometric function that will be used is <u>cosine</u>:

$cos\theta=\frac{d}{x}$ because $d$ is the adjacent side of the right triangle

$cos(32.5\°)=\frac{35.6 km}{x}$

Finding $x$ :

$x=\frac{35.6 km}{cos(32.5\°)}$

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3 years ago

What is the y-intercept of the function y = –2(2)^x+ 2?

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