Layla calculates the mean of the ages of 10 students on her bus, and she discovers the average(mean) age is 12.8. What will happ
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Answer:
$700
Step-by-step explanation:
Given that:
Cost of desktop PC 10 years ago = $6000
Cost of desktop PC 2 years ago = $300
Linear model applies.
To find the rate of decrease per year, we need to find the slope.
One quantity is cost of PC here and second quantity here is number of years.
So, the answer is:
There is a decrease of <em>$700 </em>per year.
OR
Rate of decrease per year is <em>$700</em>.
Equation of perpendicular bisector is ,
Length of both pa and pb are unit.
Slope of segment ab is,
So, slope of perpendicular bisector will be, negative of reciprocal of slope of segment ab.
Therefore, slope of perpendicular bisector is,
Since, perpendicular bisector passes through the mid point of segment ab.
So, coordinate of mid point of segment ab is,
Thus, perpendicular bisector of ab passing through (- 1, 4) and have slope 3/2.
So, equation of angle bisector is,
Since, the perpendicular bisector intersects the y-axis at point p
So, coordinate of point p is (0, 11/2)
By applying distance formula,
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