Which phrase describes an unknown or changeable quantity the height of the building times a 1/2 4 quartz and a gallon 2 o’clock in the afternoon or 3‘7""

step-by-step explanation:

the triangles are similar. therefore the corresponding sides are in proportion:

              cross multiply

            divide both sides by 32

2 over 5 and 4 over 15

don’t know last one sorry

step-by-step explanation:

step-by-step explanation:

let pq = qr = rs = x, and xz = y and zu = z.

if the horizontal lines are parallel, then corresponding segments are in proportion:

substitute:

therefore 3 = y = z.

xu = y + z → xu = 3 + 3 = 6