halliehemnes halliehemnes
  • 19-09-2020
  • Mathematics
contestada

PLEASE HELP ITS TIMED!!!!!!

PLEASE HELP ITS TIMED class=

Respuesta :

mhanifa
mhanifa mhanifa
  • 19-09-2020

Answer:

C. -1

Step-by-step explanation:

  • f(x) = x^2 - 3x - 4
  • g(x) = | x +3 | -2

--------

  • f(x) = g(x)

1. For x+3 ≥ 0 ⇒ x ≥ -3, g(x) = x + 3 - 2

  • x^2 - 3x - 4 = x + 3 - 2
  • x^2 - 4x  - 5 = 0
  • (x- 5)(x + 1) = 0
  • x = 5, x = -1
  • x = -1 is one of the options

2. For x + 3 < 0 ⇒ x < -3, g(x) = - (x +3) - 2

  • x^2 - 3x - 4 = -(x + 3) - 2
  • x^2 - 3x -2 = -x - 3
  • x^2 -2x + 1 = 0
  • (x - 1)^2 = 0
  • x = 1 > -3, so no solutions
Answer Link

Otras preguntas

What are the three Pythagorean identities?
Contrast inference and prediction.
Is it possible for a single cell to be a living organism?
When do we use passive voice?
A television station allows 15 minutes of advertising each hour. How many 30 second (1/2 minute) commercials can be run in 1 day?
Builders have observed that residence windows are most attractive if they have the width to length ratio 3:5. if a window is to be 48 inches wide, what should i
A car accelerates from 0 m/s to 30 m/s in 8 seconds. What was its acceleration?
Which has the highest boiling point ? (a) CH3CH3 (b) CH3OH (c) C2H5OH (d) C3H8
Explain the relationship between observations and hypotheses.
Builders have observed that residence windows are most attractive if they have the width to length ratio 3:5. if a window is to be 48 inches wide, what should i