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

An increase in hours of television viewing leads to increases in the sales of snack foods. This is an example of a _____.

Write a unit rate for the situation. Round to the nearest hundredth if necessary. driving 140 mi in 2 h 45 min

Rue/False – The following sentence is an example of inclusive language. A doctor must have a lot of schooling before he can receive his license. a. True b. Fals

Gametes that are motile are often called _____. ova sperm isogamous anisogamous

The last slave in the world was set free in 1877. a. True b. False

On a trip, you had to change your money from dollars to British pounds. You got 560 pounds for 800 dollars. How many pounds will you get for 300 dollars?

The blood type AB is an example of complete or incomplete dominance.

a paperweight is in the shape of a pyramid. The base is a square with sides of 1.5 centimeters. The height of the paperweight is 3 centimeters. Find the volume

The process in which two species interact in ways that benefit both of them is called A. parasitism. B. predation. C. mutualism. D. commensalism.

what country had the biggest percentage of casualties in world war 1?