7x^2-63=0

how many solutions are there and how many

A car is driving at 180 miles per hour. what is its speed in miles per minute

The school made 2,800 on the school carnival the second and fifth grade classes each made only $200 the kindergarten and fourth grade classes each made double the second grade amount the first and third grades made the same amount of money.

Suppose that the function f (x) = 7x+2 represents the number of cars that drive by in x minutes how many cars will drive by in 10 minutes A. 27 B. 70 C. 72 D. 90

An apartment has 756 square feet of carpeting. How much is this in square meters?

The values of expression below are plotted on a number line which expression would be closest to five. A) |-4| B) |-18| C) |7| D) |16|

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