Ubcdjhjdhj Ubcdjhjdhj
  • 23-02-2017
  • Mathematics
contestada

What are the x-intercepts of y = 2x2 - 3x - 20?
A) x = -5 and 2
B) x = 5 and -2
C) x = -2.5 and 4
D) x = 2.5 and -4

Respuesta :

Аноним Аноним
  • 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

Otras preguntas

β is a whole number. β x β = 64.What is the value of β +β?
HELP ME BESTIES i dont know how to do this and I’m tired of doing my algebra hw :00 THANK UUU <3 <3
A painting is 15 in tall and 20 in wide. If it is reducted to a width of 4 in, then how tall will it be?
Answer this Question I’ll BrainElist and PLEASE HELP ME DUE NOW PLEASE
What are the angle measures of this triangle? I WILL GIVE BRAINLIEST!
10. I __________ a party this weekend. Would you like to come? * have am having having am have 11. I _______ an old car. * have am having having am have 12. Don
Do you think criminal trials are effective in protecting citizens’ rights? Why or why not?
Perpendicular Bisector Theorem
What is the length of each side of this equilateral triangle? A) 42 B) 30 C) 15 D) 12
Is using brainly cheating?