Which of the following expressions is equal to - 1?

sec90°

sin180°

csc270°

What is the lowest multiple of both 4 and 6?

If 18 is 45% of a value, what is that value

a new type of pump can drain a certain pool in 6 hours. an older pump can drain the pool in 9 hours. how long will it take both pumps working together to drain the pool?

The National Park Service is building a 16-mile hiking trail. They will post a sign every mile along the trail, including one at the end. There will not bea sign posted at the beginning of the trail. How many signs will they post along the trail?

Piglet measured the rectangle on his paper. Two sides were each 4 inches long. If the perimeter of the rectangle was 30 inches how long was one of the other two sides

What is the answer to 1 3/5 * 3/5

What is - 4 - (-12) ? I don't know if you add them or subtract.

4 Chander earns a base pay of $2,200 per month He also earns a commission of 4% of his total sales One month Chander earned $2,400 Explain how to nd Chander's total sales for that month How much were his Total sales?

How to solve the problem 8y+4=5y+19

What are the dimensions of a rectangle that has a perimeter of 44 units and an area of 105 square units?