Which of the following sets could be the sides of a right triangle? {2, 3, square root of 13 } {2, 2, 4} (1, 2, square root of 3}

What is the value of x? enter your answer in the box. (cm)

Abag contains 3 red marbles 4 white marbles and 5 blue marbles if one marble is drawn from the bag what is the probability that the marble will be blue

Look at arnold's attempt to solve the equation for b: 3b = 12 b = 3 · 12 b = 36 describe the mistake that arnold made.