4,19,3,3,2,3,2,4 mean of

5

Step-by-step explanation:

4 + 19 + 3 + 3 + 2 + 3 + 2 + 4 = 40

40 ÷ 8 = 5

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answer: standard form is ax^2 + bx + c = 0

step-by-step explanation:

standard form is ax^2 + bx + c = 0

(2x + 1)(x - 2) = 0

distribute to get into standard form

2x^2 - 4x + x - 2 = 0

2x^2 - 3x - 2 = 0

a = 2, b= -3, c = -2

a is your answer

(a) the volume of the cone is 20/3 in3

hence, option a is correct.