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sjoel004
02.03.2021 •
Mathematics
URGENT
step by step answer or just which number fine
Which pair of equations could not be used to solve the following equations for x and y?
4.x +2y = 22
–2x+2y =-8
1)
4x+2y=22
2x-2y=8
2)
4x+2y=22
-4x+4y=-16
3)
12x+6y=66
6x-6y=24
4)
8x+4y=44
-8x+8y=-8
Solved
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Ответ:
Step-by-step explanation:
Ответ:
See explanation
Step-by-step explanation:
You didn't give the options but let me help out.
First, we need to convert 2 2/3 hours to minutes. This would be:
= 2 2/3 × 60 minutes
= 8/3 × 60 minutes
= 160 minutes
Since water goes over a waterfall at a rate of 162 1/2 gallons every 15 minutes. The the gallons of water going over the waterfall in 2 2/3 hours would be:
= (162 1/2 × 2 2/3hours) / 15 minutes
= (162 1/2 × 160) / 15
= 1733 1/3 gallon