how to solve equations

3y-2x=11

y+2x=9

Simplify (x-y + 1) - (x + y - 1). -2x + 2y -2y + 2 2y - 2 2x - 2y + 2

A ball on a pendulum moves 30 cm on its first swing. Each succeeding swing it moves 0.5 the distance of the previous swing. What is the total distance that the ball moves before coming to rest? Write your answer in the box.

Okay so this is for my math homework that I wasn't able to do earlier.

Equivalent ratios to 16/12

A triangle has side lengths of 5, 9, and 12. Determine whether the triangle is right, acute, or obtuse. A triangle has side lengths of 5, 9, and 12. Determine whether the triangle is A. right B. acute C. obtuse

Does the equation specify a function with independent variable x? If so, find the domain of the function. If not, find a value of x to which there corresponds more than one value of y. 6 x plus 13 y6x+13yequals=2828 Select the correct

You are factoring x² + 11x - 26. What do the signs of the terms tell you about the factors?

Write the quadratic equation whose roots are - 2 and 1, and whose leading coefficient is 4.

Given the linear equation x - y = 5, find the slope of its graph. A.-5 B.-1 C. 1 D. 5

Use the definition of continuity to determine whether f is continuous at a. f (x) = x-4x+5; a = 4 Not continuous Continuous