2. The cost of one ruler is r cents The cost of one protractor is
P
cents
The lotal cost of 5 rulers and 1 protractor is 25 pus cents
The total cost of 2 rulers and 3 protractors is 215 cents
Write down two equations in terms of r and
Р
and solve
these equations to find the cost of one protractor

Answer this question, only if you know the answer. 30 points and brainliest!

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?

Five infinity stones cost $16.80. what is the price per infinity stone ?