kyliemo2003 kyliemo2003

01-02-2017
Mathematics

contestada

Solve the system of equations.
2x-y=5
3x+2y=4

A.) (3,1)
B.) (0,2)
C.) (2,-1)
D.) (9/7,17/7)

Respuesta :

Jedimaster13 Jedimaster13

01-02-2017

2x - y = 5 also equals 4x - 2y = 10

4x-2y=10
+3x+2y=4
7x = 14
x = 2

2(2) - y = 5
-y = 1
y = -1

so, B. (2,-1)

Answer Link

Otras preguntas

What is the molecular formula of a compound that has a molecular mass of 54 and the empirical formula C2H3? A. C2H3 B. C4H6 C. C6H9 D. C8H12

What is the molecular formula of a compound that has a molecular mass of 54 and the empirical formula C2H3? A. C2H3 B. C4H6 C. C6H9 D. C8H12

Given the equation:X + Cl2 --> C2H5Cl + HCl Which molecule is represented by X? (1) C2H4 (3) C3H6 (2) C2H6 (4) C3H8

14,28,56,112 number pattern

what groups were in conflict in the south?

World war I ___ expressed disillusionment about reason and progress

Soviet Union expanded into what two countries in 1939 a) Poland and Finland b) Ukraine and Belarus c) Ukraine and Poland d) Finland and Belarus T/F

The average kinetic energy of water molecules is greatest in which of these samples?(1) 10 g of water at 35°C(2) 10 g of water at 55°C(3) 100 g of water at 25°C

You have piano lessons every fifth day and cooking classes every sixth day. Today you have both lessons. In how many days will you have both lessons on the same

How are payroll taxes and user fees different?