Will mark brainliest!
solve the system using elimination:
show all work
5x−4y=−13
5x−2y=−19

Step-by-step explanation:

5x - 4y = -13

5x - 2y = -19multiply by -1

5x - 4y = -13

-5x + 2y = 19 (result of multiplying by -1)

add

-2y = 6

y = -6/2

y = -3

5x - 4y = -13

5x - 4(-3) = -13

5x + 12 = -13

5x = -13 - 12

5x = - 25

x = -25/5

x = -5

check..

5x - 2y = -19

5(-5) - 2(-3) = -19

-25 + 6 = -19

-19 = -19 (correct)...it checks out

solution is : x = -5 and y = -3 or (-5,-3)

Step-by-step explanation:

5x−4y=−13 (1)

5x−2y=−19(2)

Multiply (2) by 2 it will give

10x - 4y = -38 (3)

Substracting (1) from (3)

10x - 5x - 4y - (-4y) = -19 - (-13)

5x - 4y + 4y = -19 + 13

5x = - 6

dividing by 5

x = -6/5

x = -1 1/5

And putting x = -6/5 in (1)

5x−4y=−13 (1)

5(-6/5) - 4y = -13

-6 - 4y = -13

-4y = -13 + 6

-4y = -7

Dividing each term by -4

y = -7/-4

y = 7/4

y = 1 3/4

tickets for the harlem globetrotters

show at michigan state university in

2010 cost $16, $23, or, for vip seats, $40.

total revenue = 16x + 23y + 40z

if 9 times as many $16 tickets were sold

as vip tickets,

x = 9z => x – 9z = 0, if 9 times as many $16 tickets were sold

as vip tickets,

x = 9z => x – 9z = 0, sales of all three kinds of tickets would

total $46,575.

16x + 23y + 40z = 46575, how many of each kind of ticket would

have been sold?

solve for x, y and z

x − 9z = 0

x − y − z = 55

16x + 23y + 40z = 46575

x = 1170

y = 985

z = 130

welcome!

14.3

step-by-step explanation:

add all the numbers together.

9 + 12 + 15 + 16 + 17 + 17 = 86

now, divide 86 by how many numbers we have: 6.

86 / 6 = 14.3