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

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 are two ways to increase frictional force?

What is the meaning of incorporated?

which of the following is an example of the barter system

The democracy of Greek city-states was limited since no women or slaves could vote.

Andre bought a stamp to mail a letter that costs 46 cents. He also mailed a package that costs 5 times as much as a stamp. How much did it cost to mail the pack

Make a conjecture about the length of the longest side of right triangle if the lengths of the two shorter sides are 6 centimeters and 8 centimeters. Length of

which characteristics of fish might allow them to survive

The measure of the number of atoms in one element that will combine with an atom of another element is A. atomic charge. B. molecular number. C. valence. D.

14) Regular aerobic activity improves the efficiency of the heart by? A. thinning the blood. B. strengthening the skeletal muscles. C. increasing the amount o

Three baseball fans estimated the top speed of a baseball pitcher’s fastball. The table shows their estimates. The top speed of the pitcher’s fastball is known