11-09-2018
Mathematics

contestada

If x-2y=0 and 3x+y=7 whats the vaule of ×?

Respuesta :

11-09-2018

The first equation may be written

x = 2y

The second equation is

3x + y = 7

Substituting

3(2y) + y = 7

6y + y = 7

7y = 7

y = 1

x = 2y = 2

Answer: 2

Answer Link

Otras preguntas

Chelsea is making a kite in the shape of a triangle. To determine if the triangle is a right triangle, Chelsea completed the following steps. Step 1: Find the s

Learn more than listening ielts

The sum of two numbers is 106. The bigger number is 22 more than the smaller number. Then what is half of the smaller number? (1 Point) a) 84 b) 21 c) 42 d) 32

pls help me solve pls show how you got the answer

Which number on the number line should be plotted?

a phlebotomy technician has collected a neonatal screening card. which of the following actions should the technician take to properly dry the blood stop collec

Vivian is concerned that a new medication could interact with other medications she is taking. When she picks up the new medication, she asks the pharmacy techn

If two lines in a linear system____, they have exactly one point in common.

Help will mark brainliest #6,7,8

Help! For the proof shown provide the reason for part d