How to solve - 2x+2y=6 + 4x+2y=-5 using elimination

A cat heart beats about 130 beats per minute. A kitten heartbeat can be as fast as 240 beats per minute. How many times does a kittens heart beat in one half hour?

The volume of a prism is 72 cubic units. What could be the length, width, and height of the prism?

Hera wants to find the volume of the rectangular prism shown below. Which equation could Hera use to find V, the volume of the rectangular prism? A. V = 11 · 14 · 3 B. V = 11 + 14 + 3 C. V = 2 (11 · 14 + 14 · 3 + 11 · 3) D. V = (11 · 14 · 3) : 2

To find the quotient 3/4 divided by 1/8 we?

0 < x < 180, and sin 42 = cos x, what is the value of x?

Quando o Ângulo de elevação do sol e de 70 a sombra de um edifício medes 20 cm calcule a altura do edifício dados : sen 70=0,93 cos 70=0,3 e tg70=2,74?

Mike has 2 cases of video games with the same number of games in each case. he gives 4 games to his brother. ricardo has 10 games left. how many video games were in each case?

By completing the square in x and y, find the center and radius of the circle. X^2+y^2+6x-4y=23

a college has a student to teacher ratio of 30 to 2. if there are 180 teachers at the college, how many studentd attend the college?

If andrew divides his cards into groups of 9 and ends up with 6 groups how many cards does he have?