H(t) = -5t2 + 98t + 3

(Quadratic equation
Step by step)

anyone? find the second, fifth, and ninth terms of a sequence where the first term is 65 and the common difference is -7. 72, 93, 121 72, 79, 86 58, 37, 9 58, 51, 44

Acircle has a circumference of 28.36 units what is the diameter of the circle

Janice determined there were 10 possible outcomes when tossing two coins and spinning a spinner numbered 1 through 6. what is the correct number? what might have been janice's error?