What is 2x+y=8 and x-2y=-1

How many inches are in 1 foot

1. For a relationship to be proportional it must ... A. be linear B. be non-linear C. pass through the origin D. both a and c

A rocket is shot in the air at an initial velocity of 12,800 miles per hour. If 1 mile is equal to 5,280 feet, then what is the rocket's speed, in feet per second, during take-off?

C cubed minus the product of five and Q + 4

Find the value of the expression c : b : 3 + 8 for b = 2 and c = 12.

Why is 4 a natural number?

Students at university x must be in one of the class ranks, freshman, sophomore, junior, or senior. at university x, 35% of the students are freshmen and 30% are sophomores.

Assume that your production line has a quota of 10 units per day at $25.00 per unit an your line meets its quota

The equation f = v at represents the final velocity of an object, f, with an initial velocity, v, and an acceleration rate, a, over time, t. Which is an equivalent equation solved for a?

Class 10R sat a test. The mean mark of the class was 70%. There are 30 students in class 10R, 20 of whom are boys. The mean mark for the boys in the test was 62%. Work out the mean mark for the girls.