kellyali22
kellyali22 kellyali22
  • 13-08-2020
  • Mathematics
contestada

y = 4x2 - 16 has how many real roots?
A. 0
B. cannot be determined
C.1
D.2

Respuesta :

wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 13-08-2020

Answer:

2 real roots

Step-by-step explanation:

y = 4x2 - 16

Set equal to zero

0 = 4x2 - 16

Add 16 to each side

16 = 4x^2

Divide by 4

16/4 = 4x^2/4

4 = x^2

Take the square root of each side

sqrt(4) = sqrt(x^2)

±2 =x

There are 2 real roots

Answer Link

Otras preguntas

What's a conditional mood
The product of 2 times 10 raised to the fourth power and 4 times 10 to the negative 12 power in scientific notation
4x+4ab=5x-6ab solve for x
Which statement best describes health promotion? A.It is the process of enabling people to exercise more control over their health. B.It is a list of instructio
which statements about velocity are true? check all that apply. a. for velocity, you must have a number, a unit, and a direction. b. the si units for velocity a
Solve the system of linear equations below. 2x + 3y = 2 x + 6y = 4 I don't need work shown but it would be appreciated. I'm doing an online class tha
An ice cream company did a survey among high school students. it was found that 86 students liked vanilla ice cream and 48 of those students liked chocolate ice
Which phrase from “Meeting at Night” contains alliteration? A. “the yellow half-moon large and low” B. “the two hearts beating each to each” C. “As I
mitochondria are responsible for dna maintenance storage making protein providing energy for the cell
A=3b what is solution for b