n8chellarspenga n8chellarspenga

19-05-2016
Mathematics

contestada

3. The only solution of the equation x^2 + bx + 16 = 0 is
x = 4. What is the value of b?

A.) b = –16

B.) b = –8

C.) b = 8

D.) b = 16

Respuesta :

konrad509 konrad509

19-05-2016

[tex]4^2+b\cdot4+16=0\\ 16+4b+16=0\\ 4b=-32\\ b=-8 [/tex]

Answer Link

ACCESS MORE ACCESS MORE ACCESS MORE ACCESS MORE

Otras preguntas

A stone is dropped from the upper observation deck of a tower, 250 m above the ground. (Assume g = 9.8 m/s2.) (a) Find the distance (in meters) of the stone abo

Suppose you mix one mole of sulfuric acid (H2SO4) with 1 mole of sodium hydroxide(NaOH). Why does the pH of the solution remain below 7? (Please explain so I c

Gangsters' warnings to migrants not to go to the police are ruthlessly enforced. Julio César Cancino Gálvez, with Grupo Beta Sur, recalls how a group of about t

Try it What point of view does the author use in this passage? What is the author's purpose? If you are really determined to eat meat all week, it is possible t

A piano, which normally sells for $800, is marked down to $700. What is the percent of markdown? A) 100% B) 87.5% C) 50% D) 12.5%

Given: ∠1 = ∠2 If AB = 10, AC = 6, and BC = 6, find AD: 51015

If blood is in short supply which blood type would be the most Beneficial to have on hand if someone needed a blood transfusion?

Currently, we are seeing a decrease in which types of crime

The amount of money left in Alma’s bank account is expressed by the linear equation y = -27x + 577, where x represents the number of weeks and y represents the

Without using technology, describe the end behavior of f(x) = -3x^4 + 7x^2 - 12x + 13 A. Down on the left, down on the right B. Down on the left, up on the ri