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weqwewe [10]
3 years ago
13

Calculate the speed of a train traveled 400miles in 5 hours

Mathematics
2 answers:
slavikrds [6]3 years ago
8 0

Answer:

80 miles per an hour

Step-by-step explanation:

400 divided by 5 equals= 80 so 80miles = 1 hour

koban [17]3 years ago
7 0

Answer:

80 miles per hour.

Step-by-step explanation:

Start with the speed formula.

speed=\frac{distance}{time}

In this scenario, the distance is 400 miles, and the time is 5 hours.

Substitute:

speed=\frac{400}{5}

Divide.

400 ÷ 5

Solve:

400 ÷ 5=80

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Step-by-step explanation:

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3 years ago
Noah has just purchased a previously owned home. he put $5,000 towards a down payment and took out a $65,000 mortgage. noah know
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2 years ago
An elementary ntimesn scaling matrix with k on the diagonal is the same as the ntimesn identity matrix with _______ exactly one
Dafna11 [192]

Answer:

exactly one, 0's, triangular matrix, product and 1.

Step-by-step explanation:

So, let us first fill in the gap in the question below. Note that the capitalized words are the words to be filled in the gap and the ones in brackets too.

"An elementary ntimesn scaling matrix with k on the diagonal is the same as the ntimesn identity matrix with EXACTLY ONE of the (0's) replaced with some number k. This means it is TRIANGULAR MATRIX, and so its determinant is the PRODUCT of its diagonal entries.​ Thus, the determinant of an elementary scaling matrix with k on the diagonal is (1).

Here, one of the zeros in the identity matrix will surely be replaced by one. That is to say, the determinants = 1 × 1 × 1 => 1. Thus, it is a a triangular matrix.

3 0
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Answer:

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Step-by-step explanation:

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