The students' scores on a standardized test with a normal distribution have a mean of 500 and a
standard deviation of 40. What percent of the
students scored between 420 and 580?

The graph shows the distance y, in inches, a pendulum moves to the right (positive displacement) and to the left (negative displacement), for a given number of seconds x. how many seconds are required for the pendulum to move from its resting position and return? enter your answer in the box.

Use the distributive law to multiply. 3(4x + 5y + 6)

The formula for the lateral area of a right cone is la = rs, where r is the radius of the base and s is the slant height of the cone.which are equivalent equations?