Which of the following statements is true?

a. sin 18° = cos 72°

b. sin 55° = cos 55°

с. sin 72° = cos 18°

d. Bоth a and c.

Simplify each expression y^12/y^12

What is the value of 3^2 3^4?

Geoff thinks of a number. He deducts five from it and the divides the result by three. His answer is 25. what number did he start with?

Prime number 157, 1057, 263, 3163

Twelve friends will share the cost of a vacation rental property that costs $1,380 a month. How much is each person's share of the cost? A. $138 B. $120 C. $115 D. $112

Suppose that you have a pattern rule with an algebraic expression. a) What does the constant term tell you about the pattern? b) What does the numerical coefficient tell you about the pattern?

Is the function f (x) = ( - 7) ^ x an exponential function? If so, identify the base. If not, why not?

What two numbers multiply to get - 294 and add to get 7

What is the common difference for this arithmetic sequence 45,40,35,30,25, ...

It takes 40 units of maple sap to produce one unit of maple syrup. Jane and her family are bottling maple syrup in 20 oz. bottles. She notices that they add about 2 oz. of air every time they fill a bottle, to avoid overfill.