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

What is best term to describe the smallest meaningful parts of words? a. prefixes b. roots c. morphemes d. suffixes

How many chemicals in tobacco products have been proven to cause cancer?

The particles that make up a liquid move a. more quickly b. more slowly than a gas.

what is the verb phrase for the sentence some students may find the test difficult.

Suppose that you want to test the effects of different dishwashing detergents on dishes that have food stuck to them. To test the differences, you wash three lo

A cone is cut by a plane parallel to the slant height of the cone. What is the shape of the cross section that is formed?

A boat takes 4 hours to go 20 miles upstream. It can go 32 miles downstream in the same time. Find the rate of the current and the rate of the boat in still wat

Ano ang kasing kahulugan ng samyo

After you finish a hard workout, your top priority should be to: a. replace the fluids lost by sweating. b. replace the sodium you lost by sweating. c. rest

What is the range of the function y = x?