1.) use a calculator and find to 4 decimal places the value of the trigonometric function using the given identity.
2u = 14°, cos 2u = cos ^2 u - sin ^2 u
a.) 0.9992
b.) 0.0972
c.) 0.9927
d.) 0.9703
e.) 0.9729

Acircus act has 3 times as many elephants as acrobats. jorge noticed that all together there were 56 legs in the circus ring. how many elephants were in the show?

Will mark the brainliest.paula makes stained-glass windows and sells them to boutique stores. if her costs total $12,000 per year plus $4 per window for the frame. how many windows must she produce to earn a profit of at least $48,000 in one year if she sells the windows for $28 each?

Two trains leave stations 546 miles apart at the same time and travel toward each other. one train travels at 95 miles per hour while the other travels at 115 miles per hour l. how long will it take for the two trains to meet