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

the area of a rectangular invitation card is 3/10 square foot. Given that the length of the card is 4/5 foot, find its perimeter.

how much force is needed to accelerate an object of mass 90kg at a rate of 1.2 m/s2

The general form of the equation of a circle is 7x2 + 7y2 − 28x + 42y − 35 = 0. The equation of this circle in standard form is ____. The center of the circle i

The healthcare professional is qualified and capable of performing a task. which professional characteristic is described?

prejudice would be an example of what factors affecting wages? a. supply b. government laws c. social attitudes d. education

Explain the origins of the american indians and compare the general cultures that they developed in south, north, and central america.

Solve 3 a. i and ii And 3 b. i and ii

Why is the amount of freshwater on earth important for human needs?

three structures of the internal ear

write the equation of the line whose slope is 2, and the line contains (4,5)