An earthquake in Oklahoma measured 3.0 on the Richter scale use the formula r equals log a / a to determine approximately how many times stronger the wave amplitude of a on the earthquake was than a zero

The figure below shows rectangle abcd and the triangle eca on a coordinate plane.which of the following expressions represents the perimeter of triangle of triangle eca in units

Solve the following inequalities and show the solution on a number line. 2x+3< 3(4x+5)

Amountain climber starts a climb at an elevation of 453 feet above sea level at his first rest stop he has climbed 162 feet and by his second rest stop he has climbed another 207 feet its getting late in the day so the climber starts his way down if the climber desends 285 feet how much does he need to ascend or descend to return to the original starting point