A pole is leaning 7 degrees towards the direction of its shadow. If the shadow is 20 feet long and a line from the end of the shadow to the top of the pole forms an angle of 40 degrees with the ground. What is the length of pole L?

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.

Select a graph that have an equation with a < 0

Acollection of coins has value of 64 cents. there are two more nickels than dimes and three times as many pennies as dimes in this collection. how many of each kind of coin are in the collection?