Given: –∠1 and ∠3 are supplementary –∠3 and ∠4 are supplementary

Prove: ABCD is a parallelogram

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.

Find the multiplicative inverse of 8-12i

Two angles are complementary. the large angle is 36 more than the smaller angle. what is the measure of the large angle?