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anygoal [31]
2 years ago
9

How long would it take a plane to go 12.75 mile if it’s going 0.15 seconds per mile

Mathematics
1 answer:
polet [3.4K]2 years ago
3 0

Answer:

  1.9125 seconds

Step-by-step explanation:

The units give you a clue as to the math needed.

  (12.75 mi)×(0.15 s/mi) = (12.75×0.15) s = 1.9125 s

It would take 1.9125 seconds to go 12.75 miles.

__

<em>Additional comment</em>

You notice that miles are in the numerator of the distance, and the denominator of the given rate. That means those units will cancel when the numbers are multiplied. The remaining units will be seconds, the unit in the numerator of the given rate. That is what the problem is asking for.

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2 years ago
g natasha is in a class of 30 students that selects 4 leaders. How many ways are there to select the 4 leaders so that natasha i
Papessa [141]

Answer:

<h2>3,654 different ways.</h2>

Step-by-step explanation:

If there are 30 students in a class with natasha in the class and natasha is to select four leaders in the class of which she is already part of the selection, this means there are 3 more leaders needed to be selected among the remaining 29 students (natasha being an exception).

Using the combination formula since we are selecting and combination has to do with selection, If r object are to selected from n pool of objects, this can be done in nCr number of ways.

nCr = n!/(n-r)!r!

Sinca natasha is to select 3 more leaders from the remaining 29students, this can be done in 29C3 number of ways.

29C3 = 29!/(29-3)!3!

29C3 = 29!/(26!)!3!

29C3 = 29*28*27*26!/26!3*2

29C3 = 29*28*27/6

29C3 = 3,654 different ways.

This means that there are 3,654 different ways to select the 4 leaders so that natasha is one of the leaders

5 0
3 years ago
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maw [93]

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A sequence is represented by the formula an=-5+a(n-1). If a4 = 20, what is the 6th term in the sequence?
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Answer:

<u>10</u>

Step-by-step explanation:

Formula :

  • aₙ = -5 + aₙ₋₁

Finding a₅ :

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1 year ago
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