maggie444 maggie444

21-03-2017
Mathematics

contestada

solve the equation
4x squared =121

A 2.75,-2.75
B 5.5,-5.5
C 11,-11
D 30.25,-30.25

Respuesta :

Favouredlyf Favouredlyf

01-11-2019

Answer:B

Step-by-step explanation:

4x2 =121

4x2-121=0

using the general formula

[-b( +/-) √b2-4ac]/2a

a=4, b= 0, c=-121

x= [0 ( +/-)√02-(4*4*-121)]/2.4

= ( +/-)√1936)/8 = ( +/-)5.5

x =5.5

x = -5.5

Answer Link

Otras preguntas

which numbers are greater than 0.7? 0.37, 0.9, 0.08, 0.69, 0.71

Fred has a very detailed model of the solar system where each planet is made out of granite rock. Since his little sister really liked the model, he spent two w

PLEASE HELP 2. In 2005, the total waste generated in a certain country was 6.711 x 10^10 pounds. Also in 2005, the country's population was 4.65 x 10^6 people.

Describe the relationship of attractive forces between molecules

With v = 0 at infinity, at what finite values of x is the net electric potential on the x-axis also zero? (a) positive value of x:

Solve for x in the equation x2+2x+1=17

Hydraulic engineers in the the United states often use, as a uit of volume of water, the acre-foot, defined as the volume of water that will cover 1 acre of lan

From where did Hinduism evolve?

In at least two to three paragraphs, write an essay where you analyze the tone the character Marullus uses to express his interpretation of Caesar's return. The

Sherlock, the dog, takes his job of protecting his owners' home very seriously. he sits at the window all day and barks whenever he perceives a threat. the prob