Answer each question

1) what happens when a negative number is subtracted from zero?

2) just by looking at the problem, how do you know if the sum of two integers is positive, negative, or zero?

Use addition and subtraction to simplify the following polynomials. a. add polynomials: (3 – 4x + 8x^2) + (–6 + 2x – 5x^2) step 1: rewrite the polynomials without the parentheses. step 2: write the polynomial in descending order and use parentheses around like terms. step 3: add the like terms identified in step 2 to simplify the polynomial. b. subtract polynomials: (3x – 5 – 7x^2) – (–2 + 6x^2 – 5x) step 1: rewrite the polynomials without the parentheses. remember to multiply each term in the second parentheses by –1. show your work. step 2: write the polynomial in descending order and use parentheses around like terms. step 3: add the like terms identified in step 2 to simplify the polynomial.

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

Acircle has a circumference of 28.36 units what is the diameter of the circle