Of the vehicles in a parking lot, 3/4 were SUVs. Of the SUVs, 1/5 were red and 1/3 were black. Which expression shows how to find the fraction of all the vehicles in the parking lot that were red or black SUVs?

Fractions can be added and subtracted only if they're fractions. a. like b. proper c. improper d. unlike

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0

Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)