I need 21 centimeters but i need to translate that into millimeters wht is the answer in milli eters

The measure of an angle is ten less than three times the measure of its compliment. What is the measure of both angles?

The sum of two numbers is 23. Part A: define two variables and create an equation to represent the situation.

F (x) = 3x+10x and g (x) = 2x-4, find (f+g) (x)

Find 3 consecutive even integers whose sum is 138.

What is 3 cups converted to fl oz?

What is the answer for 2x - (x+10) = 45

The volume of one of the Great Lakes is 3.5 * 10^3 cubic kilometers. If there are 6.3 * 10^7 fish in the lake, what is the average number of fish per cubic kilometer?

An old billionaire is writing his will, and deciding how to distribute his nine estates among his three children. He wants to give each child at least one estate, and he does not want to give any two of his children the same number of estates.

You drive an average of 300 miles per week in a vehicle that gets only 14 miles per gallon overall. with the cost of gasoline at $3.

F (x) = 9 sin (x) + cot (x), - π ≤ x ≤ π find the interval of increase.