Exercises 1-3, tell which equation you would choose to solve for one of the variables. Explain. 1) 5x+y=2
3x+y=7

2) 2x-3y=6
X+7y=2

3) 4x-y= -3
3x+3y=7

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.

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.