How to calculate sin cos and tan without a calculator?

A crew of highway workers paved 3/20 mile in 40 minutes if they work at the same rate what proportion of a mile well they paid in 60 minutes

A school district had four elementary schools to start the year. North Elementary School had 1,200 students, East Elementary School had 1,835 students, West Elementary School had 1,155 students, and South Elementary School had 1,615 students.

In the city of Bridgeport, 75% of the parks have tennis courts. If 18 parks have tennis courts, how many parks does Bridgeport have altogether?

A water tank is a rectangular prism that is 111111 meters long, 999 meters wide, and 666 meters high. A solid metal box 444 meters long, 333 meters wide, and 555 meters high is sitting inside the tank. The tank is filled with water

1. If one letter is chosen at random from the word combed, what is the probability that the letter chosen will be a "d"? 2. The sides of number cube have the numbers 2,4,8,9,4, and 7.

A train travels a total of 67km at a constant speed of 110km/h. How long is its journey? Give the answer in minutes and seconds to the nearest second.

Ann took a taxi home from the airport. the taxi fare was 2.10$ per mile, she gave the driver a 5$ tip, Ann paid a total of 49.10$. write an equations to show how many miles (m) she rode i n the taxi

A college conducted a survey to explore the academic interests and achievements of its students. It asked students to place checks beside the numbers of all the statements that were true of them.

Find the average of the list of numbers. - 18, - 29, - 17, - 12

What does supplementary mean