19-04-2018
Mathematics

contestada

Solve the system of equations algebraically show all of your steps

y=x^2+2x
y=3x+20

is it x=2.8 and y=28.5?

Respuesta :

riyanandola riyanandola

19-04-2018

If y = x^2 + 2x and y = 3x + 20

Then

x^2 + 2x = 3x + 20

x^2 - x - 20 = 0

(x - 5)(x + 4) = 0

x = 5, - 4

For x = 5, y = 3(5) + 20 = 35

For x = - 4, y = 3(-4) + 20 = 8

(5, 35), (-4, 8)

Answer Link

ACCESS MORE ACCESS MORE ACCESS MORE ACCESS MORE

Otras preguntas

The number of members in an age cohort determines the size of a baby boom or a baby bust. True False

The special theory of relativity deals with space and time under what special condition?

In addition to connotation, what should you consider when you analyze diction? A. Grammatical or spelling errors B. Meaning and effect of words C. Other texts

4) T F If two objects have the same moment of inertia, they must have the same mass.

98 points. (wont let me go to 100)

Cheif designier of Central Park in New York

Sunspots appear darker than their surroundings because they

Mr. Drucker uses a periodic review system to manage the inventory in his dry goods store. He likes to maintain 15 sacks of sugar on his shelves based on the ann

why is weed bad for your health

The current temperature of the universe as a whole is