radomes.openskiesproject.org
Ubcdjhjdhj Ubcdjhjdhj
  • 23-02-2017
  • Mathematics
Answered

What are the x-intercepts of y = 2x2 - 3x - 20?

Ax = -5 and 2
Bx = 5 and -2
Cx = -2.5 and 4
Dx = 2.5 and -4

Verified Answer :

Anonymous Anonymous
  • 23-02-2017

x-intercepts  when y = 0
so

 2x^2 - 3x - 20 = 0
(2x + 5)(x - 4) = 0

2x + 5 = 0
x = -5/2
x = -2.5

x - 4 = 0
x = 4

answer:

C) x = -2.5 and 4 

Answer Link

Related Questions

Please help me choose the correct pronoun for all 20 questions
Which statement best describes Andrew Jacksons twoterm presidencyAJackson was a grim rough and often difficult president who used the power of the executivebran
4 Completa el siguiente cuadroCASA DE LA CONTRATACIÓN5 Define los siguientes conceptosCorsariosAño de fundaciónFundadorLugar de funcionamientoPrincipales funcio
Find 36 of 458 A05122 B16488 C5122
why cant you simplify the ratio 51
Solve the quadratic by factoring 5x2 14x 13 10
P712gt310 how do you solve this
Will somebody help me with 13 and 14 please
Which cell organelle that is capable of converting light energy into chemical energy
Separated but equal was instituted in which set of laws a fugitive slave laws b black code laws c Jim Crow laws d emancipation laws