Nenaziz6akaLa4daysmi
Nenaziz6akaLa4daysmi Nenaziz6akaLa4daysmi
  • 23-12-2016
  • Mathematics
contestada

What are the solutions to the following system of equations?
y = x2 + 3x − 7
3x − y = −2

(3, 11) and (−3, −7)
(11, 3) and (−3, −7)
(3, 11) and (−7, −3)
No real solutions

Respuesta :

Lampa20
Lampa20 Lampa20
  • 28-12-2016
we will express second equation in first.

y = 3x + 2
after that we get:

3x + 2 = x^2 + 3x - 7
x^2 -9 = 0
x^2 = 9
x1 = 3
x2 = -3

y1 = 3*3+2 = 11
y2 = -3*3 + 2 = -7

we get pairs:
(3,11) and (-3,-7)

Answer is first option.
Answer Link
poap12002 poap12002
  • 07-10-2018

the answer to this question is (3,11) and (-3,-7)

Answer Link

Otras preguntas

Which of the following best describes the primary outcomes of King Philip's War?
Frank's gas tank is 1/2 full. After he buys 7 gallons of gas, it is 3/4 full. How many gallons can Frank's tank hold?
1. Which theorm explains why the circumcenter is equidistant from the vertices of a triangle? a. Vertical Angles Theorem b. Concurrency of Perpendicular Bisecto
a square + b square =
The success with which young adults deal with stress depends on their general tendency to deal with stress in a particular way, called
Please help with geomtry
Why might algebra tiles not be a good tool to use to factor x2 + 18x + 80? Explain
A Tropical Rain Forest biome is normally limited to low altitudes near the equator. True False
Find the value of n in the equation 6.2n – 3.7n = 85 + 45.        A. 16   B. 13.13   C. 52   D. 325. the correct answer is C. 52
Which culture created the Easter Island heads? Rapa Nui Lapita Tiki Marae