She has a total of 170 cubes
170/10=17 trains
Answer: 75%
Step-by-step explanation:
Height given :
69, 62, 73, 67, 63, 65, 73, 71, 70, 66, 59, 75
The total number of height given = 12
The height less than 73 are 69 , 62, 67 ,63 , 65 , 71 , 70 , 66 , 59
The total number of heights less than 73 = 9
Therefore : the percentage of these students who are shorter than 73 inches = total number of students shorter than 73/ total number of height x 100
= 9/12 x 100
= 75%
28.8 degrees
tan-1 = 71/81
Answer:

Step-by-step explanation:
APB is a straight line.
Using liner pair(sum of angles on straight line is 180 degree)

But 


In triangle FPD, FP=DP (radius of same circle.
So, triangle FPD would be isosceles triangle. FD is base of triangle.
PE is perpendicular to FD.
As we know angle bisector of isosceles triangle make perpendicular to base.
So, line PE bisect angle FPD.

As we found above
So, 
