brianc3hutMAS brianc3hutMAS

24-05-2016
Mathematics

contestada

What is the discriminant of the quadratic equation 0 = –x^2 + 4x – 2?

–4

8

12

24

Respuesta :

24-05-2016

from this equation :
a: the coefficient of x^2 & b: the coefficient of x & c: the last term
so a=-1 ; b=4 ; c=-2;
discriminant = b^2 -4*a*c
= (4)^2 -4(-1)(-2)
= 8

Answer Link

Otras preguntas

how to write a paragraph on White tigers?

What are the purposes of a public service campaign? Select three options. O to guide or alter behaviors O to influence public opinion O to sell a product or ser

10 < w/6 solve the inequality for w and simplify your answer as much as possible

Sketch the area under the standard normal curve over the indicated interval and find the specified area. (Round your answer to four decimal places.) The area be

Given the function f(x) = 8x + 7, find each of the following. f(1), f(-9), f(0)

P = m/ m - x x = 8 correct to 1 significant figure a = 4.6 correct to 2 significant figures correct to the nearest 10 m = 20 Calculate the lower bound of P. Sho

17. entails emotional and physical responses as well as one's individual experiences in response to a situation or a change in life. A. Stress O B. Emotions OC.

Please help me with letter e, I don’t understand what to do

A 70 kg box is moved along a rough floor at a constant velocity. The coefficients of static and kinetic friction are 0.45 and 0.20 respectively. Calculate the f

19. What is the mode of the following numbers? 12, 11, 14, 10, 8, 13, 11, 9 a. 11 b. 10 C. 14 d. 8