1. How do you classify 2x3 - 9x?

2x³=9x is a polynomial. Let's classify it:

First of all, it is a binomial, because it has 2 terms.

Now, is it a 1st degree polynomial, a 2nd degree polynomial, or a 3rd degree polynomial?

Don't worry, I will tell you.

A 1st degree polynomial has 1 term with an exponent of 1.

A 2nd degree polynomial has 1 term with an exponent of 2, and so forth.

Therefore, we have a 3rd degree binomial.

an altitude of 15,000 feet

step-by-step explanation:

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4