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andre [41]
3 years ago
14

Two piers, A and B, are located 105 km away from each other along a river. A motor boat, with a speed of 40 km/hour in still wat

er, is cruising between the two piers. How much time, t (in hours) will the motorboat need to get from pier A to pier B and back, if the speed of the current is 5km/hour?
Mathematics
1 answer:
Evgesh-ka [11]3 years ago
5 0

Answer:

Brainleist plz

Step-by-step explanation:

Distance from,

There = 50

and Back = 50

speed is...

There = 25+5

Back = 25-5

50/25+5 = 50/30 = 5/3

50/25-5 = 50/20 = 5/2

5/3+5/2 = Total Time  spent to go from pier a to pier b and back

Total Time  = 25/6 Hours

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Jana finished 1/4 of her homework at school and 2/3 of it before dinner how much of her homework has she finished so far
seropon [69]

Answer:

11/12

Step-by-step explanation:

1/4+2/3

1/4×3/3+2/3×4/4

3/12+8/12

8 0
3 years ago
Please help meeeee!!!!!!!!! What’s the answer????
uranmaximum [27]

Answer:

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7 0
2 years ago
4 7/10 + 6/8 Fractions please help cant solve. used two methods but answer isnt the same as the answer page from the book
erastova [34]

Answer:

5 9/20

Step-by-step explanation:

4 7/10 + 6/8

Simplify the fractions by dividing the second top and bottom  by 2

4 7/10 + 3/4

Getting a common denominator of 20

4 7/10 *2/2  + 3/4 * 5/5

4 14/20  + 15/20

4 29/20

4 + 20/20 + 9/20

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6 0
3 years ago
Read 2 more answers
I bought a carpet for my bedroom. The length of the carpet was 6 ft. The width was 12 ft. How many square feet is my carpet?
8090 [49]
72 square feet

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5 0
3 years ago
How do i write a Word phrase to represent the numerical expresion 5+(17-8)
Lerok [7]

Answer:

If i was to read this out loud, i would say: 5 plus the quantity of 17 minus 8.

Step-by-step explanation:

5 + (17-8)

Parenthesis need to be done first! That is why you need to say 'the quantity of...' You also have to add 5 to it all, and you might as well do it before 'the quantity of...' becuz it comes before it in the numerical expression.

YAY! ! ! YOU GOT IT!!! =)

8 0
3 years ago
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