A bag contains 63 marbles, some red and some green. The ratio of red marbles to green ones is 2:5. How many green marbles are there?

Is the orthocenter of a triangle on the inside ?

Write the equation in logarithmic form 8^x=64

Janice determined there were 10 possible outcomes when tossing two coins and spinning a spinner numbered 1 through 6. what is the correct number? what might have been janice's error?