Which represents a quadratic function? f(x) = −8x3 − 16x2 − 4x f (x) = three-quarters x 2 + 2x − 5 f(x) = StartFraction 4 Over x squared EndFraction minus StartFraction 2 Over x EndFraction + 1 f(x) = 0x2 − 9x + 7

Step-by-step explanation:

Given

Required

Which of the above is a quadratic function

A quadratic function has the following form;

So, to get a quadratic function from the list of given options, we simply perform a comparative test of each function with the form of a quadratic function

This is not a quadratic function because it follows the form and this is different from

This function has an exact match with

By comparison;

This is not a quadratic function because it follows the form and this is different from

This is not a quadratic function because it follows the form

Unlike the quadratic function where

So, from the list of given options, only satisfies the given condition

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0

answer: i guess 105 degrees?

step-by-step explanation: