marica24 marica24

03-10-2018
Mathematics

contestada

if (3,n) is a solution of Ax+3y=6 and (n,5) is a solution of 5x+y=20,what is the value of A?

Respuesta :

crisforp crisforp

03-10-2018

We have 3A + 3n = 6 and 5n + 5 = 20;

Then, 5n = 15;

n = 3;

Finally, 3A + 9 = 6;

3A = -3;

A = -1;

Answer Link

Otras preguntas

The width of a rectangle is 8 inches and the length is 5 inches. What is the perimeter of the rectangle? 13 in. 26 in. 40 in. 21 in.

Which issue regarding slavery was resolved at the Convention? A. whether or not slaves should be free B. whether or not blacks would be allowed to vote C. wh

what is Roosevelt's Executive No. 9066 based on?

If one bullet is dropped from a certain height and another is fired from a gun horizontally from the same height which one will hit the ground first or will the

Multiply the polynomials (7a – 7) and (2a2 – a + 5). Simplify the answer. Show your work.

What are the coordinates of the point that is 1/6 of the way from a(14,-1) b(-4,23)

The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with mean 12521252 and standard deviation 1291

What are female cells called? What are the male cells called?

Continental drift was first proposed by scientist named Alfred

article four of the u.s. consitution...? A) explains the powers delegated to the national government B) lists the powers implied as belonging to national govern