An experienced bricklayer can work twice as fast as an apprentice bricklayer. After the bricklayers work together on a job for 4 hours, the experienced bricklayer quits. The apprentice requires 14 more hours to finish the job. How long would it take the experienced bricklayer, working alone, to do the job?

The surface area of the triangular prism is .

Awavelength of 610 nm was found to be the most intense wavelength emitted by copper. answer the following questions about this wavelength of light. a) what is this wavelength in cm? b) what is the frequency that corresponds to this wavelength? c) what is the energy of light of this wavelength? d) what is the wavenumber corresponding to this wavelength?

Amanufacturer knows that their items have a normally distributed lifespan, with a mean if 9.1 years, and standard deviation of 2.9 years. if you randomly purchase one item, what is the probability it will last longer than 10 years?