codymarcinko codymarcinko

15-11-2020
Mathematics

contestada

Solve this system of equations by using a matrix. 6x-5y=-15, 4x+3y=-10

Respuesta :

EpiLord EpiLord

15-11-2020

Answer:

(-2.5,0)

Step-by-step explanation:

1.5(4x+3y)=-10(1.5) =

6x+4.5y=-15

6x+4.5y= 6x-5y (substitution)

-6x from both sides

4.5y =-5y

y=0

6x-0=-15

divide by 6

x=-2.5

Check:

-2.5(4)+3(0)=-10

-10= -10 (correct!)

(6)-2.5-0=- 15 (correct!)

Answer Link

Otras preguntas

please help! tysm! (brainylist in return

Find the sum and product of the roots. 2x^2 + 6x - 8 = 0

1. Select the property that justifies equating the expressions. 9. (1+2) = 9.1+9.2 O Associative Property of Addition O Associative Property of Multiplication O

Fill in the blank with the correct demonstrative adjective: Me encantan ________ videos (nearest). ¡Me los voy a comprar! *A one word response will suffice.

Karen runs at a speed of 5 mph. Marcus runs at a speed of 80 yd./min. Running in yards per minute, who is faster?

Click the picture..

what are the values of y and z?

8 5.27-0.93 4.89 4.07 Give your answer correct to 4 significant figures. Calculate 0580/11/0/N/13 Answer [2] T

WHAT IS THE REMAINDER WHEN [tex]32^{37^{32} }[/tex] IS DIVIDED BY 9?

A local store charges $1.97 per pound for bananas and $4.49 for a gallon of apple juice. What is the cost of 1.5 pounds of bananas and one gallon of apple juice