4.5 + pi is a. rational because it is a terminating decimal b. irrational because it is a repeating decimal c. irrational because it is a non-terminating and non repeating d. rational because it is a non-terminating and non-repeating decimal?

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.

Solve the equation using the given values: x= -2.5; y= -7.51. 2xy + 2x²

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?