Given that cos a = 1/3 find cos 2a

A car travels 660 mi at a certain speed. if the speed had been 5 mph faster, the trip would have been made in 1 hr less time. find the speed.

The fruit basket has 3 apples and 5 oranges. What percentage of the fruits are apple

How do u find square root

A population of caribou in a forest grows at a rate of 2% every year. If there are currently 273 caribou, which function represents the number of caribou in the forest in t years? A. C (t) = 273 (0.98) t B. C (t) = 273 (1.02) t C. C (t) = (273) (1.

Whats 1 3/-4 as an improper fraction

Find the area of the circle with the given radius or diameter. Use = 3.14. r = 2 A = ? 6.28 sq. units 12.56 sq. units 50.24 sq. units

In joes family2/6 of the people have blue eyes and 3/6 of the people have Brown eyes. what fraction of people has either blue or Brown eyes?

Find the surface area of the regular hexagonal pyramid shown to the nearest square meter. a. 406 m2 b. 393 m2 c. 819 m2 d. 240 m2

does it matter what interval you use when you find the rate of change of a proportional relationship? Explain.

Why can't a triangle have more than one obtuse angle