What causes the need to use imaginary numbers

How many solutions are there in 1/2 (10x + 15) - 3/2 = 2x + 6 + 3x

Maria bought 4 tops and a pair of pants that cost a total of $96.20. each top cost the same amount of Money and the pair of pants cost $36.96. What was the cost of each top?

Hal forgot the number of people at the basketball game. He does remember that the number had four digits and a 3 in the tens place. write a number that Hal could be thinking of.

Marcus can walk 1 mile to the library in about the same time he can bicycle 2.5 miles to the sporting good store. His speed on the bicycle is 6 mi/h faster than his walking speed What is Marcus's walking speed?

Find (f•g) when f (x) = x^2-7x+12 and g (x) = 3/x^2-16

Is 3/5 terminating number

Solve for x of the triangle x^2=4x9

Solve the following equation for m - 2m+7=11

If the dimensions of a triangle are cut in half, then the new perimeter is one fourth of the original perimeter. TrueFalse

Which of the following represents the zeros of f (x) = x3 - 5x2 - 3x + 15? a. 5, √3, - √3 b.-5, - √3, - √3 c. 5, - √3, - √3 d-5, √3, √3