12markspell 12markspell

19-03-2017
Mathematics

contestada

What are the zeros of the quadratic function f(x) = 2x2 + 16x – 9?

Respuesta :

wolf1728 wolf1728

19-03-2017

Use the quadratic formula
a = 2 b = 16 c = -9

x = [-b +-sq root (b^2 - 4*a*c)] / 2*a
x = [-16 +- sq root (256 -4*-18)] / 4
x = [-16 +- sq root (256 +72)] / 4
x = (-16 +- 18.11) / 4
x1 = .5275
x2 = -8.5275

Answer Link

Otras preguntas

Can any one help me with pronouns and placement- Direct object pronouns. Things like: Je regarde la télévision -turns into- Je la regarde. 4- les élèves écriven

The three-fifths clause in the U.S. Constitution: Group of answer choices expired in the year 1808 because of a key sectional compromise at the Constitutional

The 1997 a value of an object was $5000. In 2012, it was worth $9500. The annual percent growth has been constant. What is the annual percent growth?

r varies directly as s. Find r when s=10 and k=4

Describe the reasons Lyft entered strategic alliances with GM and Waymo? Are some reasons more important than others? Why or why not? Explain.

The length of a rectangle is four times its width. If the perimeter of the rectangle is 80 cm, find its length and width.

If a business closes its accounts only at year-end a. Monthly and quarterly financial statements cannot be prepared. b. Adjusting entries are made only at yea

A gift box of cookies has 4 chocolate chip cookies and 7 peanut butter cookies. Use c to represent the cost of each chocolate chip cookie and p to represent the

1. What is the difference between the music from 0:03-0:10 and 1:45-1:52? 2. If the repeat of the first theme starts at 1:53, and the repeat of the second theme

the _____ effect is particularly evident when decision makers are personally identified with the project, have staked their reputations to some extent on the pr