Given:
In the given triangle,
With respect to y, Perpendicular = 10 cm and Base = 8 cm
To find the value of y.
Formula
By Trigonometric Ratio we get,

Now,
Putting the values of perpendicular and base we get,

or, 
or, 
Rounding off to the nearest tenth, we have;

Hence,
The value of y is 51.3°.
I only did the first part but maybe later I will solve the rest too. If there are any errors but tell me so I can update the pic.
Answer:
Step-by-step explanation:
The relationship between the values of the digits in the number 9,999,999 is that, the value of each digit is 10 times of the value of the ...
The time that each car traveled.