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

Which factors will increase the speed of a sound wave in the air?

Compare using <, >, or =. 11/2____1

2. Which diagram shows a point P an equal distance from points A, B, and C?H

Eric has saved $18,300 toward a down payment on a house. He makes a salary of $59,750 a year. What is the maximum Eric could spend for a house?

Add. Write your answer in simplest form. 4 6/7 + 3 5/7=____

What is the LCD of 8 5/12 and 3 5/8?

5 + (-9) = 4 14 -14 -4

2/3 of the pizza was left over from last night. Then, Marcy ate another 2/9 of it. How much is left now?

Using roots as clues, what does autograph mean in the following sentence? The governor could not give the child an autograph because no one had a pen. personal

the system works with the circulatory system to add oxygen to the blood and remove carbon dioxide from the body