sarissal sarissal

16-03-2020
Mathematics

contestada

Solve for x.
X 2+ 4x-21 = 0

A.-3,-7
B. -3,7
C.3,-7
D.3,7

Respuesta :

kategins kategins

16-03-2020

answer: C
explanation: when you simplify the quadratic you get (x+7)(x-3), so the roots are -7 and 3

Answer Link

Otras preguntas

Answer the following

Symmetry is an important component of photography. Photographers often use reflection in water tocreate symmetry in photos. Which of the following types of symm

dentify all of the following solutions of square root of x plus 10 end root minus 4 equals x Answers x = −6 x = −1 x = −6 and x = −1 None of the above

Which of the following statements are true? Check all that apply. View Available Hint(s) Check all that apply. The average speed of gas molecules decreases with

in what ways did confucianism benefit society?

How many men did congress authorize for the army?

The French rulers believed they ruled by what time

Select the correct answer. Which fallacy does this excerpt from "Cotton Is King" by James Henry Hammond contain? It was this that brought on the American Revolu

Can a tornado pick up a person and send it to another island?

Given the function f(x)= -5+4x^2 calculate the following value: f(a+h) Please help ASAP!!! :(

RELAXING NOICE