On two investments totaling $7,000, Lydia lost 4% on one and earned 6% on the other. If her net annual receipts were $308, how much was each investment?

In the field of thermodynamics, rankine is the unit used to measure temperature. one can convert temperature from celsius into rankine using the formula c= r/1.8 - 273, what is the temperature in celcius corresponding to r degrees rankine.

The figure below shows rectangle abcd and the triangle eca on a coordinate plane. which of the following expressions represents the perimeter of triangle of triangle eca in units

Find the solution of each of the following.