Use the grouping method to factor the polynomial below completely. x^3-4x^2+3x-12

Mathematics

2 answers:

Archy [21]3 years ago

8 0

Answer:

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

Step-by-step explanation:

A P E X

ale4655 [162]3 years ago

5 0

Answer:

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

Step-by-step explanation:

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3 years ago

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lukranit [14]

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You are standing 400ft away from a building that is 850ft tall. Find the angle of elevation from where you’re standing to the to

klio [65]

Answer:

The angle of elevation is approximately $64.8^o$

Step-by-step explanation:

Notice that the two pieces of information given: "400 ft away from a building", and building that is "850 ft tall", can be regarded as the two legs of a right angle triangle (see attached image).

Then the angle $\theta$ that we are trying to find (the angle of elevation) can be found by using the arc-tangent function: