kbe51 kbe51
  • 13-11-2019
  • Mathematics
contestada

Solve the system y=-x² - 4x+1 and y-2x = 10.

Respuesta :

MathPhys
MathPhys MathPhys
  • 13-11-2019

Answer:

(-3, 4)

Step-by-step explanation:

y = -x² − 4x + 1

y − 2x = 10

Solve the system of equations using substitution or elimination.  Using substitution:

(-x² − 4x + 1) − 2x = 10

-x² − 6x + 1 = 10

-x² − 6x − 9 = 0

x² + 6x + 9 = 0

(x + 3)² = 0

x + 3 = 0

x = -3

y = 4

The solution is (-3, 4).

Answer Link

Otras preguntas

I really need help (ill give brainlest)
What were some physical and environmental characteristics that investors looked at when building factories?
Regular hours worked = 40; Overtime hours worked = 8; Regular rate of pay = $8.25 per hour* O $330.00O $99.00 O $429.00 O $276.00​
The perimeter of a rectangle is 40 units. The length of the rectangle, L, is 7 units.
AC = BC, <ACB = 40°, <AMN = 25° <CPM = ?​
I need explain in this one please and i need the answers
How many joules of heat are needed to heat at 13.00 grams of water from 55.00 °C to 93.00 °C. -2065 J 5054 J 2065 J 2989 J
Select the correct answer from each drop-down menu. The length of arc PR is 12 centimeters and its measure is 60° on circle O. The area of sector POR is approxi
What effect does physical activity have on body composition?
5x + 2(x + 7) = 14x – 7 The first one to answer gets brainalist. Social Test.