boo71
boo71
12-03-2015
Mathematics
contestada
3x-y=-1 and 2x+y=-14 how to solve showing work?
Respuesta :
Panoyin
Panoyin
13-03-2015
3x - y = -1 ⇒ 6x - 3y = -2
2x + y = -14 ⇒
6x + 2y = -42
-5y
=
40
-5 -5
y = -8
3x - (-8) = -1
3x + 8 = -1
-8 -8
3x
=
-9
3 3
x = -3
(x, y) = (-3, -8)
Answer Link
VER TODAS LAS RESPUESTAS ( 34+ )
Otras preguntas
اكتب قصة تنتهي بعبارة: " وهكذا أذركت معنى قولهم: إن الركض السريع لا ينفع إذا جاء متأخرا " وذلك في حدود 350 500 كلمة.
Algebra ∠KPL and ∠JPL are a linear pair, m∠KPL=4x+21, and m∠JPL=4x+39.
It takes 3.5 ounces of cocoa to make a cup of hot chocolate how much cocoa is needed to make 7 cups of hot chocolate
one more..please..i need it
fahren-fliegen-gehen *
Purchase price $ 70,000 Delivery cost $ 3,000 Installation charge $ 1,000 Estimated life 5 years Estimated units 140,000 Salvage estimate $ 4,000 Purchase
What fraction does NOT represent 125%?
In AVWX, x = 6.4 inches, w = 8.8 inches and to the nearest 10th of a degree.
Define senescent. What cells put off senescence?
Find the unknown term in the geometric proportion x = 4 :: 8 : 2
