Write 0.0000000001 in scientific notation

Consider the experiment: flip a coin, then roll a number cube

Ab is the diameter of a circle. if the circle has a center of (2,1) and a is at (0,-2) find the coordinates of b.

John is a subway driver and earns $25/hour regular however if he works on a holiday he gets double time and a half John worked 30 hours plus 8 hours on New Year's Day how much did he earn?

Hey! i know how to compare scientific notation, but i don't understand what they are asking me to do here. In 2010, the number of participants in a checkers tournament was 2.6 * 104 people.

Which irrational number can be multiplied by negative square root of 41 to get a product that equals 1?

The population of a certain inner-city area is estimated to be declining according to the model P (t) = 452,000e-0.014t, where t is the number of years from the present.

18. 7. A baker's dozen (13) of cookies is on sale for $4.94. What is the cost of an individual cookie? ya

Round the answer to the nearest cent. The price of an Item seling at 150% of its $63 value is

If Johnny drives 120 miles in 2.4 hours, how long would it take him to drive 424 miles

Two angles are complementary. The first angle measures 35 Percent. What's the measurement of the second angle?