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2 years ago

The mean of four numbers is 43. What are those four numbers?

Mathematics

1 answer:

Andrej [43]2 years ago

7 0

Answer:

42,43,43,44

Step-by-step explanation:

If there are four numbers in a list then the middle 2 numbers should be added up and divided up to give the mean. If we are given the mean we can now work backwards to give us:

$\frac{x+y}{2}$ (where x and y are the 2 middle numbers)

We can also see that x and y must be equal as the mean is an integer.

So:

$43=\frac{2x}{2}$

So x=43 and that is the middle 2 numbers.

I don't exactly know how to explain how i got the other 2 numbers.

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2 years ago

a port and a radar station are 2 mi apart on a straight shore running east and west. a ship leaves the port at noon traveling no

Rom4ik [11]

Answer:

The rate of change of the tracking angle is 0.05599 rad/sec

Step-by-step explanation:

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Therefore,

$\frac{sin 45}{6.25} = \frac{sin \alpha }{7.5}$

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Where we put

$\frac{sin 45}{6.25} = \frac{sin \alpha }{x}$ to get

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3 years ago

The mean of four numbers is 43. What are those four numbers?​

The mean of four numbers is 43. What are those four numbers?