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Dahasolnce [82]
2 years ago
7

1

Mathematics
1 answer:
aalyn [17]2 years ago
8 0
The expression used are E and B
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A submarine descended 3/5 of a kilometer in 1/5 of an hour. What was the submarine’s rate of descent in kilometers per hour?
grandymaker [24]

Answer:

3 km per hour

Step-by-step explanation:

You can deduct the answer instinctively since both the distance and the time of the descent are expressed in /5... so you can just get rid of the '/5' in both instances to get the result: 3 kilometers in 1 hour.

But you can also find it easily using the cross-multiplication system:

\frac{3}{5} km  =  \frac{1}{5}  hour

Then you multiply each side by 5 to get

3 km = 1 hour

Thus the rate of descent is of 3 km per hour.

3 0
3 years ago
Read 2 more answers
Ivan has a piece of material that is 4 feet long. He cuts it into 7 equal pieces. Which equation shows how to find the length, i
Drupady [299]

You have not provided the options, but this solution is an equation that will work:

Answer:

4 / 7 = x

Step-by-step explanation:

      Since the total material is 4 feet long, we can divide 4 feet by 7, the number of equal pieces cut, to see how long each piece is.

      This gives us an answer of 4/7 or about 0.571

4 0
2 years ago
35w+9w+35w^3+25w^3–25w^3<br><br>pls help
SVETLANKA909090 [29]

Answer:

35w^3 + 44w

<em><u>Combine Like Terms:</u></em>

= 35w + 9w + 35w^3 + 25w^3 - 25w^3

= (35w^3 + 25w^3 - 25w^3) +(35w + 9w)

= 35w^3 + 44w

Hope this is right ♡

8 0
3 years ago
5+(-5)=0 identify the property
Usimov [2.4K]

Answer: Additive Inverse

Step-by-step explanation: The Additive Inverse tells us that if we add

a number and the opposite of that number, the result will be 0.

4 0
3 years ago
What is the sum of interior angels of an octagonal box?
Gala2k [10]
8-2=6
180×6=1080 degrees
sum of interior angle of an octagonal box = 1080 degrees
8 0
3 years ago
Read 2 more answers
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