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Anni [7]
3 years ago
12

3xy−5y for x=−1.5 and y=−3

Mathematics
2 answers:
Georgia [21]3 years ago
3 0
Plug in 1.5 for x, to start off. It is then simplified to : 3*(1.5)* y - 5y
Then plug in -3 for y, it's then simplified to : 3*(1.5)* -3 - 5 * (-3)
First, multiply 1.5 times 3, and that will get you 4.5. The multiply 4.5 with -3, and that will get you -13.5. Moving on, subtract -13.5 from the 5 that is being multiplied to -3, which is -15. In conclusion, -13.5 subtracted from -15 would be -28.5. Hope this helps!
Neko [114]3 years ago
3 0

Answer:

28.5

Step-by-step explanation:

whoever said -28.5 your wrong i just put it i nRSm and it said incorrect. but when i put in 28.5 it said correct

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