Solve the following system by the substitution method

2x+y=4

y+2x

What two numbers add to 2 and multiply to - 80

How do i solve? 2/3h = - 9

Eliza and Jamie are making cupcakes for a bake sale at school. Eliza need 2 1/3 c of flour for her recipe, and Jamie needs 1 3/4 c for her recipe. They have 4 c of flour. Do they have enough flour for both recipes? Explain.

What is the answer to the equation - 3 (x+4) + 15=6-4x

Order the group of quadratic equations from widest to narrowest. Y = 4x^2, Y=2/3x^2, Y=-3x^2

Which expression shows a way to find 2,813*7

O patrimônio que a contabilidade estuda e controla, registrando todas as ocorrências nele verificadas.

How do you solve an inequality

A bag contains 10 red marbles 15 green marbles and 15 blue marbles what is the probability that its a red marble

7.3 is what percent of 139?