mayaduke8372 mayaduke8372

16-11-2017
Mathematics

contestada

If you were solving by substitution, for which variable in the first equation would it be easiest to solve? 3x + y = 7 x – y = 1

Respuesta :

dannielle dannielle

21-11-2017

3x+y=1
7x-y=1⇒ y=7x-1

3x+(7x-1)=1
10x-1=1
10x=1+1
10x=2
x=2/10
x=0,2

3x+y=1
3*0,2+y=1
0,6+y=1
y=1-0,6
y=0,4

Answer Link

Otras preguntas

Over the counter drugs ___

Functions that do not have a data type are called _____functions. a. zero c. void b. null d. empty

8.Stacks and queues are a) primitive data structures b) non-primitive data structures c) non-linear data structures.... d) data types

In the 10 years after Muhammad's death, Islam was spread throughout the Middle East primarily by __________. conquering Arab armies missionaries who preached Mu

What best describes how advances in agriculture affected the growth of cities ?

What is the height of a cone with a radius of 3 inches and of volume 4 cubic inches? Round your answer to the tenths place. 0.1 inch 0.3 inch 0.4 inch 0.8 inch

A triangle has two sides of lengths 5 and 12. What value could the length of the third side be?

how many male african american officials were elected in the us in 1970? a. 1309 b. 1530 c. 1000 d. 1401

Which u.S. Islands are connected by the seven mile bridge?

What is the slope of the line which passes through (1,4) and (0, 1)?