Which polygon appears to be regular?

Figure A

Figure B

Figure C

Figure D

Figure A is a square. Figure B is a parallelogram. Figure C is a right triangle. Figure D is a trapezoid.

A total of 804 tickets were sold for the school play. They were either adult tickets or student tickets. There were 54 more student tickets sold than adult tickets. How many adult tickets were sold?

What is the gcf of 15abc^2 and 25a^3bc

Solve for h v=pie*r^2h

In the waiting room of a vet's office, there are 4 cats, 5 dogs, 1 lizard, and 1 hamster. A represents the event that a randomly selected animal in this waiting room is a dog.

At a candy store Erica bought 3 kg of cinnamon red hots and 1 kg of gummy bears for $21 meanwhile Irene bought 3 kg of cinnamon red hots and 3 kg of gummy bears for $39 what is the cost of 1 kg of each type of candy?

Explain how to write a function rule from the table below. Then write a function rule X|2|4|6 Y|1|0|-1

A man went into a bank to cash a check. In handing over the money the cashier, by mistake, gave him dollars for cents and cents for dollars. He pocketed the money without examining it, and spent a nickel on his way home.

Question: An emperor penguin is 45 inches tall. It is 24 inches taller than a rockhopper penguin. Write and solve an equation to find the height (in inches) of a rockhopper penguin. Is your answer reasonable? Explain.

A person has eaten 2/5 of a cake. When his family comes he wants to split it even with 10 people. How much of the cake will each person get.

2. Determine whether each of these sets is finite, countably infinite, or uncountable. For those that are countably infinite, exhibit a one-to-one correspondence between the set of positive integers and that set.