Which equations support the fact that rational numbers are closed under addition? select each correct answer. 13+13=23 9√+9√=29√ 2√+2√=22√ 6√+(−6√)=0

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.

You and a friend went to the movies.you spent half your money on tickets. then you spent 1/4 of the money on popcorn, $2 on candy, and $3 on a soda. if you have $1 left, hiw much money did u take to the movies?

Select the correct answer from each drop-down menu. consider the following polynomials equations. 3x^2(x-1) and -3x^3+ 4x^2-2x+1 perform each operation and determine if the result is a polynomial. is the result of a + b a polynomial? yes or no is the result of a - b a polynomial? yes or no is the result of a · b a polynomial? yes or no