Four friends went scuba diving. according to the following statements, who spotted sea life at the fastest rate? lance saw 2 reef sharks in 6 minutes. jasmine saw 3 sea cucumbers in 8 minutes. robert saw 4 jellyfish in fifteen minutes. shilpa saw 3 pencil urchins in ten minutes.

In δabc, if the length of side b is 3 centimeters and the measures of ∠b and ∠c are 45° and 60°, respectively, what is the length of side c to two decimal places?

Ageologist had two rocks on a scale that weighed 4.6 kilograms together.rock a was 0.5 of the total weight.how much did rock a weigh?

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?