msmith16 msmith16

04-09-2018
Mathematics

contestada

Find the number of real number solutions for the equation. x^2+9x+20=0
A.) Can't be determined by graph
B.) 1
C.) 2
D.) 0

Respuesta :

JulianVella JulianVella

04-09-2018

x^2+9x+20 = 0
factorises to (x+5)(x+4)=0
so x = -5 or -4
Therefore answer is C.) 2

Answer Link

Otras preguntas

Can anyone help with this please

What are all the sphincters along the gastrointestinal tract?

If a certain shade of blue has a frequency of 7.33 x 10^14Hz what is the energy of exactly one photon of this light. Is this as simple as multiplying the frequ

If the clothing maker bought 500 m2 of this fabric, how much money did he lose? Use 1tepiz=0.625 dollar and 0.9144m=1yard.

Which of the following in not a method used to determine latitude? chronometer astrolab cross-staff quadrant

Explain the connections between democracy and the free enterprise system.

put autoimmune in a sentence

Rene is going to the lake to visit some friends. If the lake is 60 miles away, and Rene is driving at 40 miles per hour the entire time, how long will it take h

What are the coordinates of the vertex for f(x)=3x^2+6x+3?

Which of the following was Rudolf Virchow's contribution to our understanding of cells? Cells are the basic units of life. All living things are made of cells.