Which equation could use to solve x in the proportion 4/5=9/x

The measures of two supplementary angles are (3x + 2) ° and (2x + 4) °. What is the measure of the smaller angle?

Whats the answer to 2 (a+3) = - 12

What is the LCM of 2,7

How do i solve 6x=5x+7 by using solving systems by elimination?

Parallel to y = 9x+4 through (2, 7)

William earns $15 each time (t) he mows a lawn. Which equation can be used to determine how many lawns William mowed if he earned $75?

Solve for x: 9^ (x-8) = 3^ (4x-12)

Trey is estimating the length of a room in his house. The actual length of the room is 17 m. Trey's estimate is 15 m. Find the absolute error and the percent error of Trey's estimate. If necessary, round your answers to the nearest tenth.

Which ordered pair is a solution of the equation y = 4x? (1, 3) (-1, - 4) (-4, - 1) (1, - 4)

A bowl contains 3 red, 8 blue, and 7 black beads. Margaret randomly selects 3 beads one after the other without replacement. Find the probability of getting a red, blue, and black bead, in that order.