Find the number of real solutions of each equation using the discriminant.

1: x^2 + 25 = 0

2: x^2 - 11x + 28 = 0

3: x^2 + 8x + 16 = 0

Solve for the variable a in this equation: c = 8πab

Russ has a car that averages 9.8 miles per gallon while Mike's car averages 39.2 miles per gallon. How does Mike's mileage compare to Russ's

Simplify 1/3 (9a + b) - 1/2 (4a + 2b).

One of the roots of the equation 5x^2+bx+24=0 is 8. Find the other root and the value of the coefficient b.

How many 1/3 cups are rings are there in 12 4/6 cups of juice

If the base of a parallelogram is 3 and the height is 4 what is the area?

What is the LCD of 5/6 and - 3/8?

12y+d=-19y+t solve for y?

One out of 42 high school ball players plays college ball. One out of 25 college players plays professional ball. What fraction of high school players plays professional ball?

2. The numbers 1 through 50 are written with red marker on slips of paper while the numbers 51 through 100 are written with blue marker on slips of paper. All the papers are put into a bag and shuffled. One card is randomly selected.