Answer: 
Step-by-step explanation:
Since, the total number of contestant = 7,
Thus, the probability that out of 3 contestant, me and my friend is chosen
= 
= 
= 
=
⇒ Third Option is correct.
Value of x is 10
Step-by-step explanation:
- Step 1: Here, x is the hypotenuse of the right angled triangle. Use the trigonometric ratio cosine to find x.
cos 28° = adjacent side/hypotenuse = 11/x
⇒ x = 11/cos 28° = 11/-0.96 = -11.46 ≈ 10 (rounding off to nearest tenth)
I can’t help with out a problem to solve
Equivalents fractions for 7/4:
7/4, 14/8, 21/12, 28/16, 35/20, 42/24, 49/28, 56/32, 63/36, 70/40, and so on ...
Example:
7/4 * 2/2 = 14/8
7/4 * 3/3 = 21/12
7/4 * 4/4 = 28/16
7/4 * 5/5 = 35/20
7/4 * 6/6 = 42/24 and so on.......
