Answer:
No
Step-by-step explanation:
The square root needs to be a perfect square root to be a rational number, for example: the square root of 25 which equals 5.
Answer:

Step-by-step explanation:
Given: sin x + cos x
To change the given trigonometry expression in term of sine only.
Trigonometry identity:-
Expression: 
We get rid of cos x from expression and write as sine form.
Expression:

Hence, The final expression is only sine function.
Answer: Option 'c' is correct.
Step-by-step explanation:
Since we have given that
Number of bushels of peanuts = 800
Price of each bushels of peanuts = $5.85
And there is mark up rate = 33%
So, Total price would be

If there is spoilage rate = 21%
So, the remaining rate would be 1-0.21=0.79
so, Number of remaining bushels of peanuts would be

So, Selling price per bushel would be

Hence, Option 'c' is correct.
Yes 2:1 you know this because the short sides, 3 and 6 are in the same ratio as the long sides, 4 and 8