Answer:
its A). x=3
Step-by-step explanation:
Move all terms to the left side and set equal to zero. Then set each factor equal to zero.
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12/7. You put the numbers into mixed numbers giving you 18/7 and 9/6. For division you flip the second fraction and multiply them together. So you do 18/7 x 6/9. You're also able to cross cancel 18 and 9 giving you 2/7 x 6/1. 6 x 2 is 12 and 7 x 1 is 7. Your answer is 12/7.
The A.) MURRAY RIVER is the only Australian river to flow year-round.
It is the longest river in Australia. Its length is 2,508 kilometer or 1,558 miles.
It borders the states of Australia; namely, New South Wales,Victoria, and South Australia.
This means that...
the first worker does 1/8 of the job each hour.
the second worker does 1/4 of the job each hour.
the third worker does 1/4 of the job each hour.
So together they get 1/8+1/4+1/4 of the job done per hour.
Rate: 5/8 of the job per hour
Now if we know the rate, the job will be finished in...
1/(5/8) hours ----> 1.6 hours or 1 hour and 36 minutes
answer: 1.6 hours or 1 hour and 36 minutes
