The weather center in Alaska recorded the average temperature for 42 days and prepared the dot plot shown. What was the mean tem
perature during that period?
A. 12.4 degrees
B. 10.7 degrees
C. 11.3 degrees
D. 9 degrees
A. 12.4 degrees
B. 10.7 degrees
C. 11.3 degrees
D. 9 degrees
1 answer:
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Answer:
Step-by-step explanation:
Let denotes number of pencils, markers, erasers respectively.
For Andrea:
For Justin:
For Virginia:
On subtracting equations (i) and (ii), we get
Put in equation (i)
Put in equation (iii)
Multiply equation (iv) by 5 and equation (v) by 6 and then subtract both the equations.
Put in equation
Put in equation (i)
Check the picture below.
notice that the triangle ADH, since the segment AL is an angle bisector, meaning it cuts the angle A in two equal halves, then the triangle ADH is only using half of A.
notice that the triangle ADH, since the segment AL is an angle bisector, meaning it cuts the angle A in two equal halves, then the triangle ADH is only using half of A.