Each equation represents a proportional relationship. Choose the equations for which the constant of proportionality is 5
es
A)
16x - 20y = 0
B)
25y = 20x
y = 0.4x
D)
4x + 5y = 0
E)
y = 0.8x

Create and solve a linear equation that represents the model, where squares and triangles are shown evenly balanced on a balance beam. assume the weight of a square is 1 unit and the weight of a triangle is unknown.

Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?

What are the solutions of the equation? z^2 + 11z + 24 = 0 a. 8, -3 b. 8, 3 c. -8, -3 d. -8, 3