An emperor penguin has a mean life span of 20 years with a standard deviation of 2.7 years. What percentage of emperor penguins live 25 years or more?

At the many chips cookie company they are serious about the number of chocolate chips in their cookies they claim that each cookie hasn't c chips. if their claim is true there will be 200 chips in 10 cookies

What is the length of the missing leg in this right triangle? 18 mm 24 mm 26 mm 32 mm

If the speed of an electromagnetic wave is 100,000 cm/s and its wavelength is 100 cm, what is its frequency? a) 100,000 cycles per second (hz) b) 1 × 10-3 cycles per second (hz) c) 10,000,000 cycles per second (hz) d) 1,000 cycles per second (hz)