Answer: The correct answer is option C; 90√2
Step-by-step explanation: The line segments are labelled as base 1, base 2 and base 3 respectively. This we shall call point 1, point 2 and point 3. These three points form a right angle. Also we have been told that Marcus is on point 3 and Jean is on point 2. They are both 90 feet apart. Also Joel is on point 1 and he is 90 feet away from Jean. The unmeasured distance therefore is from point 1 to point 3, which is the distance from Joel to Marcus (or Marcus to Joel).
The distance from point 1 to point 3 is the hypotenuse of the right angled triangle derived. Using the Pythagoras' theorem, the distance from Joel to Marcus (or JM) is calculated as follows;
JM² = JC² + JL²
Where JM is the distance between Joel and Marcus (hypotenuse), JC is the distance from Jean to Marcus and JL is the distance from Jean to Joel.
JM² = 90² + 90²
JM² = 8100 + 8100
JM² = 16200
Add the square root sign to both sides of the equation
√JM = √16200
JM = √100*√81*√2
The right hand side of the equation can be further solved as
JM = 10*9*√2
JM = 90√2
Therefore the distance between Marcus and Joel is calculated as 90√2 feet
Answer:
In Table (b)

Step-by-step explanation:
By definition, Inverse proportion equations have he following form:

Where "k" is the Constant of proportionality.
Solving for "k":
Having the values of "x" and "y" given in each table, you can check if the products of "x" and "y" is equal to a constant value.
Then:
(a) For
:

For
:

For
:

For
:

Since the product of the values of "x" and "y" is not constant, they are not inversely proportional.
(b) For
:

For
:

For
:

For
:

Notice that the Constant of proportionality is:

Therefore "x" and "y" are inversely proportional.
The mean absolute deviation of a set of data is the average distance between each data value and the mean. The mean number of contacts stored and the distance each data value is from the mean is shown below. Each data value is represented by an ×. So, the mean absolute deviation is 3.75<span>.
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