I really don't think you wrote the question properly. Or maybe you did, but this question doesn't make any sense! :/
Part i


Substituting,

Answer: -1
Part ii
I'm not sure that one's typed in correctly but I'll solve it as written.



We're not asked to simplify it so I wont. Substituting,

Answer: 59/306
Answer:
This is a 30-60-90 triangle so you would do this formula:
Short side (opposite the 30 degree angle) = x.
Hypotenuse (opposite the 90 degree angle) = 2x.
Long side (opposite the 60 degree angle) = x√3.
Step-by-step explanation:
Your answer is 16 because there’s only 4 numbers without repetition those numbers can be used 4 times so 4x4
Answer:
10 m/s
Step-by-step explanation:
Velocity= Position/Time
You can take any point on the line to calculate velocity.
Lets take t=1s
At t=1, position=10m
velocity= 10m/1s
=10 m/s
You can take any other point too, velocity will remain same.
For eg.
At t=5s
position=50m
velocity=50/5
=10m/s
Hope it helps :-)