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

Otras preguntas

2. Explain two different ways that you could classify the following items: banana, lemon, sandwich, milk, orange, meatball, salad.

Find the rate of change for the function of change from x=-3 to x=1

does this make sence to anyone

khairul order one set meal at a restaurant which offer a 20% discount. there is a service charge of 10% and GST is at 7% given that he pays a total of 23.54 fin

Three spheres (water, iron and ice) of the exact same volume are submerged in a tub of water. After the spheres are lined up, they are released. The spheres are

The manager of the Super Supermarket would like to be able to compute the unit price for products sold there. To do this, the program should input the name and

Sassy, Inc. needs $115 million to build a new distribution center. If it issues common stock to raise the funds, the issuance costs will be 8 percent of the tot

A property is generating $100,000 in income and has expenses of $25,000. The investor pays $3,000 toward mortgage principal each year and $32,000 toward interes

Question 1 Points 3 23 and Louis immerses his left hand in a beaker containing cold water and immerses his right hand in a beaker containing warm water. Then, h

Please help it's for a test.A car of mass 1000kg is traveling 30m/sa) What is the kinetic energy? b) How high will it have to travel up a hill to have the same