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3 years ago

An airplane makes a 2,748-mile flight in 6 hours. What is the airplane's average rate of speed in miles per hour?

Mathematics

2 answers:

Lapatulllka [165]3 years ago

7 0

Answer:a

Step-by-step explanation:

ehidna [41]3 years ago

4 0

Answer:

speed=16,480 miles per hour or 16,480/hour.

Step-by-step explanation:

Distance=speed ×time

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Determine weather the statement is true or false. Justify your answer

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$\begin{gathered} \cos (-\frac{7\pi}{2})=\cos (\pi+\frac{\pi}{2}) \\ \cos (-\frac{7\pi}{2})=\cos (\frac{3\pi}{2}) \end{gathered}$

As we know:

$\begin{gathered} \cos (x)=0 \\ for \\ x=\pi n-\frac{\pi}{2} \\ n\in Z \end{gathered}$

For:

$\begin{gathered} n=2 \\ x=2\pi-\frac{\pi}{2}=\frac{3\pi}{2} \\ for \\ n=-3 \\ x=-3\pi-\frac{\pi}{2}=-\frac{7\pi}{2} \end{gathered}$

Therefore:

$\begin{gathered} \cos (-\frac{7\pi}{2})=0 \\ and \\ \cos (\frac{3\pi}{2})=0 \\ so\colon \\ 0=0 \\ This_{\text{ }}is_{\text{ }}true \end{gathered}$

Therefore, the statement is true

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Hey men Is the number 7

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3 years ago

A jar of marbles contains 5 blue 12 red, and 8 yellow marbles. what is is probability that you you select a blue marble, keep it

Natali5045456 [20]

Answer:

Step-by-step explanation:

Add the number of marbles together then you but the number of blue ones first 5 to 25 chances

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Law Incorporation [45]

Answer:

Step-by-step explanation:

The hypotenuse is always the longest side on a right triangle.

To find any missing value add the other 2 values and whatever they equal must be greater than the hypotenuse

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I need to know as soon as possible!! thanks

qwelly [4]

Answer:

m = 24

Step-by-step explanation:

m + 7° + 2m + 11° = 90°

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