Answer:Maria rate = 1/13 job/hr
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Felipe rate = 1/16 job/hr
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Together rate = 1/x job/h
Step-by-step explanation: rate + rate = Together rate
1/13 + 1/16 = 1/x
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16x + 13x = 13*16
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29x = 13*16
x = 7.17 hrs = 7 hr 10 min 12 seconds (time to do the job together)
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Cheers,
Rubberduck100000.
Answer: The measure of the third angle would be 71
Step-by-step explanation:
The correct answer is c. :)
Answer: The height of fir tree is 9 meters and the height of pine tree is 12 meters.
Step-by-step explanation:
Given : The combined height of one fir tree and one pine tree = 21 meters.
Since, the height of 4 fir trees stacked on top of each other is 24 meters taller than one pine tree.
Let x be the height of fir tree and y be the height of pine tree.
Then we get the following equations:

Adding (1) and (2) we get

Substitute the value of x in (1), we get

Hence, the height of fir tree is 9 meters and the height of pine tree is 12 meters.