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Sergeu [11.5K]
3 years ago
15

I need help asap:):):)

Mathematics
1 answer:
Helga [31]3 years ago
6 0

Answer:

last one (very bottom) or 6

Step-by-step explanation:

ez pz ;)

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Determine the average speed of the current in a river if a boat moves at 20 miles/hour in still water and takes 3 hours to trave
Taya2010 [7]

The speed of the current in a river is 6 miles per hour

<em><u>Solution:</u></em>

Given that,

Speed of boat in still water = 20 miles per hour

Time taken = 3 hours

Distance downstream = 78 miles

To find: Speed of current

<em><u>If the speed of a boat in still water is u km/hr and the speed of the stream is v km/hr, then:  </u></em>

Speed downstream = (u + v) km/hr

Speed upstream = (u - v) km/hr

<em><u>Therefore, speed downstream is given as:</u></em>

\text{ speed downstream } = \frac{distance}{time} = \frac{78}{3}\\\\\text{ speed downstream } = 26 \text{ miles per hour }

We know that,

Speed downstream = (u + v)

26 = 20 + v

v = 26 - 20

v = 6 miles per hour

Thus speed of the current in a river is 6 miles per hour

3 0
3 years ago
Could you guys possibly help me???
Vikki [24]

Answer:

sure whats the question

Step-by-step explanation:

5 0
3 years ago
<img src="https://tex.z-dn.net/?f=%5Chuge%7B%7B%5Cmathfrak%7Bquestion%E0%BF%90%7D%7D%7D" id="TexFormula1" title="\huge{{\mathfra
kramer

Answer:

<h2><em><u>9</u></em></h2>

Step-by-step explanation :

\sqrt{ \frac{243}{3} }

=  \sqrt{81}

=  \sqrt{9 \times 9}

= <em><u>9(Ans)</u></em>

5 0
3 years ago
Read 2 more answers
The length of a rectangle is 6 feet and the width is 3 feet. Find the perimeter I
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So for the perimeter, there will be 2 of each side. 3(2)+6(2)= 18.
The perimeter is 18 feet.
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A department store is offering a discount on purchases of $75 or more. Monica sees a pair of
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She needs to spent 14.55 more
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