Izab15
Izab15
02-11-2017
Mathematics
contestada
Elimination
4x+5y=-15
-3x-2y=13
Respuesta :
Dreamer4102001
Dreamer4102001
04-11-2017
multiply the first equation by 3 and tge second by 4:
12x+15y=-45
-12x-8y=52
then add the equations:
0x+7y=7
7y=7
y=1
so 4x+5(1)=-15
4x+5=-15
4x=-20
x=-5
Answer Link
VER TODAS LAS RESPUESTAS ( 78+ )
Otras preguntas
graph y=3sinx and y=sin 3x on the same axes. label the graph of each function.
The statement, "right angles measure 90 degrees," is an example of: A postulate A definition A theorem A conjecture
find a common solution for each system of equations: y=3x+5 y=-5x-3
A curved section of roadway is in the shape of a circular arc of 410-m radius. The curved section is horizontal, not banked. The coefficient of friction for tir
What were the reasons for the failure of the League Nations?
'for a good cause if you are determined you are able to overcome any obstacle'. explain
the length L of a spring is given by L=(3/4)F + 5 where F is applied force. What force F will produce a length of 8?
State whether the following statements are true or false. Justify.(i) For an arbitrary binary operation * on a set N, a * a = a , for all a * N.(ii) If * is a
A particle travels in a circle of radius 82 cm and with a centripetal acceleration of 4.7 m/s2. How long does the particle take to complete one revolution?
If the length of each side of a square prism is ten feet. Find the total surface area of this object
