Find the exact value of cos a, given that sin a = 8/11 and

a is in quadrant I.

cos a=?

(Simplify your answer. Type an exact answer, using radicals as needed.)

What is 88,999 round to the neaset ten

Samantha's younger brother just turned 3 years old. Fred's brother is now 30 months old. Who brother is older? Explain

A square garden has side lengths of 8 inches. Jackie makes a rectangular garden with the same area as the square garden. which of these could be the dimensions of the rectangular garden.

A candle that is 13 inches tall is lit. as the candle burns, its height decreases at a rate of 0.5 inches per hour. let t t represent the varying number of hours that have elapsed since the candle started burning.

Least common multiple of 147 and 3087

James tosses a coin 40 times and gets 26 heads and 14 tails. what is the relative frequency of tails? A 14% B 35% C 50% D 65%

How do you regroup 42-15

7k:3=21. What is the value of k?

Which of the pairs of angles are vertical angles and thus congruent?

3r + 7r, Solve for r