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3 years ago

enthan entered a canoe race. he rowed 4 1/2 miles in 1/2 hour. what is his average speed in miles per hour

Mathematics

2 answers:

Y_Kistochka [10]3 years ago

5 0

9 miles per hour is the answer

lesya692 [45]3 years ago

5 0

His average speed per hour is 9 mph since he is able to row 4.5 miles in a half hour, doubling that number would give you his speed per hour.

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Here are four digits.

Bogdan [553]

Answer:

A: 357

(1) 9641

Step-by-step explanation:

With A you really just want to go from the smallest number up so it would be the smallest number possible.

<em>EX.</em> 357 vs. 736 357 is smaller

With 1 you have to go from the highest number to lowest number to get the biggest answer possible.

<em>Ex.</em> 9641 vs. 1946 9641 is larger.

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IrinaK [193]

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Alex777 [14]

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3 years ago

Which operation can be used with the augmented matrix below?

ycow [4]

Answer:

Multiply row 2 by-1 and add it to row 3.

Step-by-step explanation:

The given augmented matrix is $\left[\begin{array}{ccc}3&-21&15\\15&8&15\\-2&-1&3\end{array}\right]$

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1. Switching rows

2. Multiplying a row by a nonzero constant.

3. Adding/Subtracting two rows

Therefore the correct option is: Multiply row 2 by-1 and add it to row 3.

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DIA [1.3K]

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