What is the a-value in the following quadratic equation?

y=-x^2+x-20

Find the value

The area of a circle is found with the formula A = The expression is pi times r squared., where pi represents 3.14. If a tile artist is laying down tiles in a circular mosaic pattern and the area of the circle is 706.

What is the x-intercept of the line with this equation 8x - 1/3y = 16? Enter your answer in the box. (_,0)

What number solves the equation 11x + 7 = 73?

Darius buys a bottle of a chemical solution that contains 70% alcohol. The bottle contains 500 ml of solution. How many millilliters of alcohol are in the solution

Addison has 5/6 cup of Parmesan cheese that she needs to split into 1/8 cup servings.

Hunter learns to perform 2 vocal pieces during each week of lessons. How many weeks of lessons will Hunter need before he will be able to sing a total of 6pieces?

A roller coaster starts from a deck at an elevation of 20 feet above the ground. On the first hill it climbs 78 feet and then drops 85 feet. On the second hill the coaster climbs 103 feet and then drops 110 feet.

What's the division equation of 7,848 divided by w = 36

Simply the expression. x^3*x^-2

A recipe for salsa uses 65% of tomatoes. if a batch contains 5.2 cups of tomatoes, how large is the batch of salsa