Yes your answers are correct
Answer:
X=6
Step-by-step explanation:
As you know x then you can use tan to do

Then you will get the answer of 39°48'
Answer:
9r+7r+9r
Step-by-step explanation:
Answer:
Commutative property of addition of rational numbers: Two rational numbers can be added in any order. Thus for any two rational numbers a/b and c/d, we have. (a/b + c/d) = (c/d + a/b)
a. Your answer is correct.
b. Divide the given value of sigma by √n where n = sample size = 7. Then perform the same calculation you did for part a. The probabiilty is 0.4427.