7:6=21: what is the ratio

Tan65°-tan25°=2tan40° prove!

F (x) = - 2x^2+6x-3 find f (-2)

The country of Sylvania has decided to reduce the number of its illiterate citizens by are 3/5 illiterate people in the country. each year. This year there are 9000 illiterate people in the country.

The population of a species of rabbit triples every year. This can be modeled by f (x) = 4 (3) ^x and f (5) = 972. What does the 5 represent?

What is the equation of the graph below? y = cos (x/0.4) y = cos (5x) y = cos (0.4x)

How do you know what to round a number by when it doesn't say it

The scale on the map is 1 cm 12 km find the actual distance to the kilometers for the given lengths of the Map a) 4 km

Q - 1.8 = 14 solve it

If Cade shoots 275 free throw baskets in 2 hours, about how many can he shoot in 5 hours.

Dave found that about 8/9 of the students in his class have a cell phone. What percent of the students in his class do not have a cell phone? Write your answer as a percent and as a decimal. Show work.