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

Based on the density graph below, what is the probability of a value in the sample space being anywhere from 60 to 80? A.50% B.75% C.100% D.25%

Choose all the answers that apply. Antibodies _____. 1) are produced by lymphocytes 2) are produced by macrophages 3) attach to antigens 4) are proteins

Hhhhhhhhhhhhhhheeeeeeeeeeeeeeeellllllllllllllppppppppppppopppp

Pick three Congressional Roles and explain their duties: Majority Leader Minority Leader Whip Pro Tempore Speaker of the House

United States Farms, 1960-1995. According to the graph, in what year were there two million farms?

What is consumerism? a pattern of wanting and buying new products a pattern of saving most of one’s money a pattern of raising prices on store-bought goods a pa

Match each type of scientist with a statement appropriate for her field of study. 1. astronomer "My focus is on the origin and structure of the universe." 2.

Which of these is a type of nonpoint-source pollution that might occur on a farm? A. Excess salt deposited in the soil when irrigation water evaporates B. Exces

Scientists have discovered that the oklahoma salamander, eurycea tyerensis develops into its adult form in streams where the streambeds are made of fine, tightl

The primary source of energy for a growing hurricane comes from ________.