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

I need help and polynomials

a hiker descends from a mountain peak . If the hiker descends at a rate of 700 feet every half hour , what is the hikers elevation relative to the peak after 3

________ believed that ideas in and of themselves generate social change and that modern capitalism would not have arisen without the protestant revolution.

How many ways can you select 4 volunteers out of 13?

Calculate the volume of the drawing. A. 315 km3 B. 204 km3 C. 105 km3 D. 306 km3

Which statement best describes the circular flow model? a. The model represents the movement of money and resources throughout the economy. b. The model rep

How did martin luther king jr contribute to the civil rights movement?

________ is the basis of good nutrition because it is essential to all forms of metabolism in the body?

Recall that the system of cooperative federalism began during the great depression and the presidency of franklin d. roosevelt in the 1930s. look carefully at t

What value is a discontinuity of x^2+2x+3/x^2-x-12?