Rosy176 Rosy176

15-01-2020
Mathematics

contestada

The expressions (x+4) is a factor of x2+kx-20 what is the value of k how do you know

Respuesta :

GrandNecro GrandNecro

15-01-2020

Answer:

k = -1

Step-by-step explanation:

You're given (x+4) as one of the factor for the equation

x² + kx - 20 = 0

what number does 4 multiply with to get -20? It's -5.

So

= (x+4)(x-5)

= x² + -1x - 20

= x² + kx - 20

Answer Link

Otras preguntas

Determine the number of solutions for each quadratic. 1.) 4x^2-3x+4=0 2.)9x^2-12x+4=0

Please solve pls explain as well

If a 20kg mass hangs from a spring, whose elastic constant is 1800 N / m, the value of the spring elongation is

why national heritage is important

A man walking on a railroad bridge is 2/5 of the way along the bridge when he notices a train at a distance approaching at the constant rate of 45 mph . The man

Line AB and Line CD are parallel lines. Which translation of the plane can we use to prove angles x and y are congruent, and why?

You are a sales representative for a company that makes a new alternate fuel for vehicles. You have prepared a presentation for the environmental engineers to s

Maya is interning at a law firm over the summer and is paid by the hour. If her hourly wage is $52, which equation represents the proportional relationship betw

converter (ADC) do ?what does Analog Digital

The perpendicular distance of (2, -4) from x axis is