Definition: An isosceles trapezoid is a quadrilateral with one pair of opposite sides congruent. Using the definition of trapezoid, prove that Quadrilateral 2 is an isosceles trapezoid.

Round answers to two decimal places.

1. Length of AD

2. Length of BC

The magnitude, m, of an earthquake is defined to be m=log l/s, where i is the intensity of the earthquake (measured by the amplitude of the seismograph wave) and s is the intensity of a “standard” earthquake, which is barely detectable. what is the magnitude of an earthquake that is 1,000 times more intense than a standard earthquake? use a calculator. round your answer to the nearest tenth.

Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?

What is the the greatest common factor ?