(45/360)2πr=9π/4

Solve for r

Sorry if this might be confusing, but leave the fractions fractions, like just simplify them, dont turn it into decimals, and pi is a variable not 3.14.
And please show steps

About 9% of th population is hopelessly romantic. if 2 people are randomly selected from the population, what is the probability that at least 1 person is hopelessly romantic?

Answer asap. you begin with 1/2 scoop of ice cream. since you're hungry, you ask the vendor for 2/7 more scoops of ice cream. then, you eat 5/8 scoops. how many scoops of ice cream are left on your cone? i will mark brainliest for first correct answer.

What is the equation of the parabola with focus (-1,-1) and directrix y=1?