X^2 - 8x-9=0

Rewrite the equation so that it is of the form x^2+bx=c

A family of 3 joins a gym. Each person pays $25 to join plus $20 per month. The family decides to stop going after they have paid $675 all together. How could the equation be written? How many months did the family go to the gym?

A lock is opened using a sequence of three numbers. The numbers range from 0 to 39, inclusive, and cannot be repeated within the sequence.

A farmer uses pesticides to keep harmful bugs away from his crops. the amount of pesticide used in an inverse variation of the percentage of bugs remaining on the crops. If he uses 5 gallons of pesticide per acre, 5% of the bugs remain.

You own a jewelry store, and sales last month were $19,000. You had $3,000 in discounts and $1,750 in returns. Calculate your net sales for last month.

The formula for the area of a triangle is A = __1 2bh, in which b represents the length of the base and h represents the height. If a triangle has an area of 192 mm2 and the height is 12 mm, what is the measure of the base?

What is the difference between drawing and constuctinh something

17/4 as a decimal explained

A chocolate bar is made up of 12 equal pieces. Antony ate 3/4 of a chocolate bar. Jacoby ate ⅔ of a chocolate bar of the same size. Antony said that he ate more chocolate than Jacoby.

2 divided by what equals 20

I am a product, one of my factors is 7, the sum of my factors equals 11, what number am I