manclaudie manclaudie

01-06-2016
Mathematics

contestada

Two equations are given below:

a − 3b = 4
a = b − 2

What is the solution to the set of equations in the form (a, b)?

(−2, −2)

(−3, −1)

(−9, −7)

(−5, −3)

Respuesta :

02-06-2016

Hello,

a-3b=4 (1)
a-b=-2 (2)

(1)-(2)==> -2b=6
=>b=-3 and a=-2+(-3)=-5

Answer D

Proof
-5+3=-2
-5-3(-3)=4

Answer Link

Otras preguntas

this one too!! need just 1 answer about this system

As a block falls through the air by 40 meter it does work equal to -1800 joule. Determine the mass of a block.

Find the vertex of this parabola: y = -x2 + 6x – 15

Which country was a member of the Central Powers? C Russia Serbia C Italy Ottoman Empire

Give an example of a well-stated research question that involves estimating a characteristic about the population of part-time students at your college. Improve

need na need na po plssss.

pls help ill give brainliest and 5 starts

A tree is 18 feet tall and casts a shadow that is 22 feet long. How far is it from the end of the shadow to the top of the tree? Show your work.

Two sides of an isosceles triangle have lengths 12 and 18. What is the greatest possible value of the perimeter of the triangle? Please help me.

The sum of three consecutive odd integers is 39. Find the three integers.