greenhappypiggies greenhappypiggies

01-04-2019
Mathematics

contestada

the pair of variables x=5, y=7 is the solution to the equation ax–2y=1. Find the coefficient a.

Respuesta :

06-04-2019

Answer:

a = 3

Step-by-step explanation:

Put x = 5 and y = 7 to the equation ax - 2y = 1 and solve for a:

(a)(5) - (2)(7) = 1

5a - 14 = 1 add 14 to both sides

5a - 14 + 14 = 1 + 14

5a = 15 divide both sides by 5

5a : 5 = 15 : 5

a = 3

Answer Link

Otras preguntas

HELP ME GUYS PLEASE PLEASE PLEASE PLEASE!!!!

the purpose of educating patients in self care

What is the name of the littlun with the bird mark on his face in lord of the flies?

Brainliest and Five Stars for correct answer

Them empirical formula of an artificial sweetener is c14h18n2o5 the molecular mass is 294.34 what is the molecular formula

If (examscore > 89); grade = 'a'; using the code snippet above, when does grade get assigned a value of 'a'?

The volume of a cone is 3 cubic units and its height is x units. Which expression represents the radius of the cone base, in units?

How many times greater is 70 billion than 700 million

Why is there controversy to the opinion that human contribution of carbon dioxide to the atmosphere is cause warming

someone please help!!!!! SERIOUS ANSWERS ONLY!!!!!!