Why dont my questions get answered

subtract polynomials

(6x^2-7x+8) - (2x^2+4x-3)

Consider the statement : Congruent triangles are always similar. Which of the following statements is an example of the statement above? Select all that apply. angles are the same, but sides are proportional to eachother. Sides are the same size.

In how many ways can three different flower pots be lined up on a windowsill if we are choosing from 9 different plants?

Find 1/9 as many as 3 divided divided by 5

Find the center of mass of a uniformly solid cone of base 2a and height h.

How would I start to solve this? Y=-1/3-1

Allie remembered that the 3 digits in her locker combination were 2, 4, and 8, but she forgot the order of the numbers what is the maximum number of combinations she must check in order to open her lock?

Question Mosi is putting together his monthly budget and would like to know how much he makes in a month. His annual net salary is $52,000. What is his monthly pay rate, rounded to the nearest dollar?

Alex has 21 marbles zach has 19 times as many marbles as alex how many marbles does zach have

A 3ft bird stands on top of a 26ft building. Looking down at an angle of 60°. How far must the bird fly to get to the ground

What is 2+2 guys i don't know and my math teacher asked me to tell her next lesson