answersLogoWhite

0

0.1x + 0.9y = -7.4

multiply throughout by 8: 0.8x + 7.2y = -59.2

Subtract second equation from this: 7.6y = -68.4 so that y = -9

Substitute this value of y in the first equation: 0.1x - 8.1 = -7.4

so that 0.1x = 0.7 or x = 7

Solution: (x,y) = (7,-9)

User Avatar

Wiki User

14y ago

Still curious? Ask our experts.

Chat with our AI personalities

MaxineMaxine
I respect you enough to keep it real.
Chat with Maxine
SteveSteve
Knowledge is a journey, you know? We'll get there.
Chat with Steve
TaigaTaiga
Every great hero faces trials, and you—yes, YOU—are no exception!
Chat with Taiga

Add your answer:

Earn +20 pts
Q: 0.1x plus 0.9y equals -7.4 0.8x-0.4y equals 9.2?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Continue Learning about Math & Arithmetic