angvallecorsa angvallecorsa

25-02-2021
Mathematics

contestada

8
Solve the following system of equations.
8x + 4y = -40
3x + y = -8
OA. x = 2, y = -14
OB. x = -14, y = 2
O
C. x = 12, y = -44
OD. x = 5, y = -20
Please help

Respuesta :

Mohajerinejadamirhos Mohajerinejadamirhos

25-02-2021

Answer:

8x + 4y = - 40

We can divide both sides by 4

2x + y = - 10

3x + y = - 8

If wa substract first one from the other one we have :

2 = x

So y = - 10 - 4 = - 14

OA is correct

Answer Link

Otras preguntas

How would you prepare 1.00 L of a 0.400M solution of copper(II)sulfate, CuSO4?

Photosynthesis uses sunlight to convert water and carbon dioxide into

If Kelly gave 1/3 of a pizza to Holly and 1/5 to Diane how much did she have left?

How do you find 60% of 20?

Does anyone know how to do this? the solubility of barium carbonate, BaCO3, is 0.0100 g/L. Its molar mass is 197.3 g/mol. What is the Ksp of barium carbonate?

What word best describes things taken from an enemy in war?

write in vertex form (by completing the square)y=4x2+40x+96

At a banquet, the ratio of hot drinks to cold drinks was 5 to 3. A total of 400 drinks were served. How many were hot?

What is 6 1/2 - 1 9/10

A person opens a door by applying a 10-N force perpendicular to it at a distance 0.90m from the hinges.