Find a common multiplier then divide ex. 21/27 = 7/9 
        
             
        
        
        
The height of the tree = 15.34m 
What is height?
Height is a way to measure someone or something from base to top or head to toe. In other words, height tells how tall someone or something is. 
Given, 
the height of Jocelyn = 1.75m 
At 1 pm = 43.85 
She is sway from tree = 38.6 
therefore, 43.85 - 38.6 = 5.25 
Therefore, height 
1.75/5.25 = h/43.35
5.25h = 76.73
therefore, height = 15.34 
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For this question, we want to find out the greatest amount of area of pizza for the least amount of money:
So we have two pizzas with a 10 in. diameter. Let us take one of those pizzas.
The formula for area of a circle is 

; So the area for one of these 10 in. pizzas would be 

 or 25

.
We have two of these pizzas, so the total area that we would get with $14 would be 25

*2 or 50

.
For the second case, we have one pizza with a 14 in. diameter.
The area of this pizza will be 

 or 49

.
So for $15 we can buy 49

 worth of pizza.
The best deal would be to buy the two medium pizzas of 10 inch diameter, because for $14, you get 50

.
 
        
        
        
Answer:
D.
Step-by-step explanation:
<u>Explanation for part 1.</u>
To find the mean, find total then divide by number of data set
For college salaries
Sum=41+67+53+48+45+60+59+55+52+52+50+59+44+49+52=786
Number of samples=15
Mean= 786/15 =52.4 * $1000=$52400
For High school salaries
Sum=23+33+36+29+25+43+42+38+27+25+33+41+29+33+35=492
Number of samples =15
Mean= 492/15 = 32.8 *$1000= $32800
College grads make more money according to the means.
<u>Explanation for part 2.</u>
Treat the data as part of coordinates and graph then on the same scale and axis to visualize the trend and make comparison.In this case, the graph for the line of best fit is linear as attached.
 
        
             
        
        
        

The ratio of  = - 34
  = - 34
How to solve such questions?
Such Questions can be easily solved just by some Algebraic manipulations and simplifications. We just try to make our expression in the form which question asks us. This is the best method to solve such questions as it will definitely lead us to correct answers. One such method is completing the square method.
Completing the square  is  a method that is used for converting a quadratic expression of the form  to the vertex form
 to the vertex form
  . The most common application of completing the square is in solving a quadratic equation. This can be done by rearranging the expression obtained after completing the square:
. The most common application of completing the square is in solving a quadratic equation. This can be done by rearranging the expression obtained after completing the square:  , such that the left side is a perfect square trinomial
, such that the left side is a perfect square trinomial
 
 
=  
=  (Completing Square method)
                   (Completing Square method)
=
On comparing with the given equation we get 
p = -  and q =
     and q = 
∴  =
 = 
= - 34
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