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Montano1993 [528]
3 years ago
12

A boat travels 30 miles up the river in the same amount of time it takes to travel 38 miles down the same river. If the current

is 2 miles per hour, what is the speed of the boat in still water?
Mathematics
1 answer:
Ksenya-84 [330]3 years ago
5 0
X miles per hour  -  <span> speed of the boat in still water
(x - 2)  -  speed up the river
(x + 2)  -  speed down the river
</span>
\frac{30}{x - 2} = \frac{38}{x + 2}
30 * (x + 2) = 38 * (x - 2)
30x + 60 = 38x - 76
- 8x = - 136
x = 17 miles per hour  -  <span>the speed of the boat in still water.</span>
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Answer:

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solution 2= 160ml

Step-by-step explanation:

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0.52x200=104ml of alcohol present

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1st equation

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2L+6M=1040ml

2nd

same for this equation

10L+10M=2000ml

10L+10M=2000

2L+6M=1040

elimination method

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=20L+60M=10400

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M=160ml

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The probability that an individual is left-handed is 0.11. in a class of 29 students, what is the probability of finding five le
natka813 [3]

This is a case of binomial probability, with n = 29, p = 0.11 and x = 5.


Using the function binompdf on my Texas Instruments calculator, as follows:


binompdf(29,0.11,5) = 0.117 (answer)

5 0
3 years ago
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xeze [42]

Answer:

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Step-by-step explanation:

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siniylev [52]

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