Isoke is solving the quadratic equation by completing the square.

10x2 + 40x - 13 = 0

10x2 + 40x = 13

A (x2 + 4x) = 13

What is the value of A?

Suppose that you believe that contractor 1 is twice as likely to win as contractor 3 and that contractor 2 is three times as likely to win as contactor 3. What are the probabilities of winning for each contractor?

At camp summer fun 4 campers share each tent. the camp is expecting 331 campers. about how many tents will they need? will the number of tents they actually need be more or less than the estimate? how do you know?

To be able to do the problem 5 (10 + 4) mentally, Zack does 50 + 20 instead of 5 (14). Zack is using which of the following properties?

There are 10 pencils there are 4 fewer pens how many pens are there?

What is 32986538537 plus 78.9 times 5

A Lake Tahoe Community College instructor is interested in the average number of days Lake Tahoe Community College math students are absent from class during a quarter that lasts 9 weeks. What is the population she is interested in

The perimeter of a rectangle is 74 feet. the length of the rectangle is 3 feet less than 4 times the width. what is the width of the rectangle in feet?

What volume of water at 4°c can be held in a cube whose edge is 3.0 cm long?

What are the factors of the expression 3x (y + 5) ?

How do i solve - 6 (4/3y-2) + 8y=12