Solving variables? b+a=20 I have to solve for b I do not understand this

The lot thatDanais buying for her new one story house is 35 yards by 50 yards. Dana's house plans show that her house will cover 1,600 square feet of land. What percent of Dana's lot will not be coveredby the house? Explain your reasoning.

A submarine is 450 M below sea level if it ascends 275 meters what is there submarines position now

What is the answer to 9x=-108

Which figure has all sides of equal measure but not necessarily all angles of equal measure?

Write an expression to represent: The sum of eight and the product of two and a number x.

What is the gcf of 7x^2, 7x and - 28

A soccer player kicks the ball to a height of 1 meter inside the goal. The equation for the height, h, of the ball at time, t, is h=-4.9t^2-5t+2. Find the time the ball reached the goal.

Bowl contains 8 red balls, and 7 blue balls, and you draw 4 balls. In how many ways can the selection be made so that at least one of each color is draw?

X^2+1/2x+1/16=4/9 Factor the perfect-square trinomial on the left side of the equation. (x + ) ² = 4/9

Which number has the least absolute value? A) 30 B) 10 C) - 20 D) - 40