13. there 11 blue marbles and 7 red marbles in a box. Write the ratio of red marbles to blue marbles. 14. There are 12 apples and 15 oranges in a fruit basket. Write the ratio of apples to oranges.

15. There are 5 blue marbles and 16 red marbles in a box. Write the ratio of blue marbles to red marbles.

16. There are 12 dogs and 7 cats in a park. Write the ratio of cats to dogs.
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The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 3 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30∘c on monday, but decreased at a constant rate in the next 3 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.

Stefano accidentally dropped his sunglasses off the edge of a canyon as he was looking down. the height, h(t), in meters (as it relates to sea level), of the sunglasses after t seconds, is shown in the table. during its descent, the pair of sunglasses passed by a climber in the canyon 6 seconds after stefano dropped them. to the nearest meter, what is difference in elevation between stefano and the climber? 166 meters 176 meters 230 meters 240 meters its b.176 i took the test 166 is wrong and 176 is correct

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.