18-04-2017
Mathematics

contestada

If 4x+3y=10 and 2x+7y=20, determine a coefficient for x that makes the equation below true.

_____x+y=0

Respuesta :

kettboy kettboy

18-04-2017

4x + 3y = 10 means 8x + 6y = 20
2x + 7y = 20 as well so
2x + 7y = 8x + 6y
-6x + y = 0

coefficient = -6

Answer Link

Otras preguntas

The greatest common factor of 3m squared n + 12mn squared is

Write a quadratic function in standard form with zeros 9 and -4

Factor the expression.2x2 + x - 15

Solve the equation using the quadratic formula : x^2-10x+25=18

What are the different types of erosion?

Which of the following sentence containan a verb in the simple past tense ? A) Jenna has driven this route multiple times B) I was working overtime for about si

The perimeter of a square garden is to be at least 22 feet but not more than 36 feet. Find all possible values for the length of its sides.

Factor the expression.2x2 + x - 15

Factor the expression.2x2 + x - 15

John is twice as old as her sister Jane. Four years ago, John was three times as old. What is John’s current age?