Verify if this is an identity

cot (-x) tanx=-1

Find the value 12 to the second power

Find 3 consecutive numbers where the product of the smaller two numbers in 19 less than the square of the largest number?

A store is having a closing sale. All items in the store are 35% off. Samantha found a jacket she wants to buy with an original price tag of 85$. Wich expression will find the price of the jacket after applying the sale?

The number with the same value as 32 tens

A grandmother has $490 that she wants to give to her 14 grandchildren. How much money will each grandchild receive if they each receive an equal amount?

The bases on a softball diamond are 60ft apart. How far is it from home plate to second base

A map has the scale 2 inches equals 180 miles. The distance from Springfield to Glenview is 8 inches. How many actual miles separate Springfield from Glenview

Why is the formula for finding the area of a parallelogram for the same as for the rectangle?

Justin wants to use 376ft of fencing to fence off the greatest possible rectangular area for a garden. What dimensions should he use? What will be the area of the garden?

The average score on a biology test 72.1 write the average score using a fraction.