Use a half-angle identity to find the exact value of sin pi/8

In an experiment, a fair coin is tossed 9 times and the face that appears is recorded. How many elements of the sample space will start with a pair (TT or HH) or end with a pair (but not both) and have a total of exactly two tails?

Jeremy has $5.30 in nickels which equation can be used to find out how many nickels X Jeremy has

The scale factor of two similar polygons is 3:4. The perimeter of the larger polygon is 200cm. what is the perimeter of the smaller polygon?

Which expression is equivalent to the given expression? (7y^6) (2y^-4) ^2

A manufacturer sells lamps at six dollars each and sells 3000 each month. for each one dollar that the price is increased, 1000 fewer lamps are sold each month. it costs 1 dollars to make one lamp.

What centimeter is what fraction of one meter

What is the product of 7 to the square root of 8 times 4 to the square root of 5

A certain color paint should have a mix of blue and green in a ratio of 5:2. If a house painter needs to use 8 gallons of green paint, how many gallons of blue paint should he mix with it in order to obtain the right color?

A milk container is in the shape of a rectangular prism. The width is 26 centimeters, the depth is d centimeters, and the height is d + 24 centimeters. Write a polynomial that represents the volume (in cubic centimeters) of the milk container.

2 + 2 = 4 - 2+3-1+2-4 = whats the anwser