Please help :( A quadratic function in the form ax2+bx+c=0 has a discriminant with a value of 23. What are the number and type of solutions for this quadratic function?

2 irrational solutions

2 imaginary solutions

2 rational solutions

1 rational solution

What is the area of triangle abc if a = 8, b = 11, and c = 15?

Assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.

Do xuan nam isgoing to invest $1000 at a simple interest rate of 4% how long will it take for the investment to be worth $1040?