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

Who designates the incident commander and the process for transferring command?

△FEB≅△CNB. What is length of BN¯¯¯¯¯¯ ?

What is the largest city on the world

I need the answers to these.

PLZZ HELP Which answer describes the type of sequence? 1/6, 1/2, 3/2, 9/2, ... neither arithmetic nor geometric arithmetic geometric

Which dimensions cannot create a triangle? three angles measuring 25°, 65°, and 90° three angles measuring 50°, 50°, and 50° three sides measuring 5 in.,

What is m∠KNL? Enter answer in box

A line passes through the points (9,-2) and has a slope of 2/3. Write an equation in point-slope form for this line.

a football player kicks a football with an initial vertical velocity of 65 feet per second. The function h=-16t^2+65t models the height h (in feet) of the footb

HELP PLEASE Write an argumentative essay (i do not need an essay I need some more reasons as to why else it's unethical or a good source of information ) in wh