Which one of the following statements expresses a true proportion?

A. 3:4 = 9:12 B. 54:9 = 6:3 C. 2:1 = 1:2 D. 7:9 = 8:9

Sonia read 2 pages of book per minute. If sonia read all the pages of the book at the same rate, which equation shows the tital number of pages, y, that sonia readvin x minute?

1200 feet to miles what ratio to use

Joan and Nick went out for pizza. They each ordered the same size pizza. Nick has his pizza cut into 12 slices and ate eight of those slices. Joan had her pizza cut into eight slices and ate five of those slices.

What does k mean in numbers

It took the construction company 63 days to complete the building. How many weeks did it take? (1 week = 7 days)

F (x) = 4x2 - 24x + 20?

My question: Tia's car needs repairs. Honest Harry will charge $70 per hour plus $130 for the part. Lucky Lou will charge $80 per hour plus $40 for the part. How long is the job if the two costs are the same?

Sarah used 2.5 cups of cheese in a dish that serves 10 people. Amyn used 1.6 cups of cheese in a dish that serves 8 people. How much more cheese is in one serving of Sarah's dish?

In the diagram below AQRS is an equilateral triangle and RT OS Which statement must be true? A. RT2.07 B. QR RT C. AQRT is a 45-45-90 triangle D. AQRT is a 30-60-90 triangle.

Round 636 to the nearest ten and hundred