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# Download Aim: How do we solve literal equations? Do Now: Evaluate 1. Find t

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Aim: How do we solve literal equations? Do Now: Evaluate 1. Find t where d= r t 12 Literal Equations. A‐REI.1 copy aim & do now complete do now put a HW problem on the board. for d = 60 miles and r = 30 mi/hr 2. Find l where P = 2l + 2w for P = 32 cm and w = 5 cm HW Problems on the Board write the problem work out problem circle answer write your name Literal Equations Literal Equation is a equation containing 2 or more variables To solve a literal equation, you just solve the equation for the indicated variable Ex.1 d = r t 2 Ex. A = 1 b h 2 solve for r solve for b ...sometimes the variable to be solved for is indicated with a comma before it... Ex. 3 y = 3x + 2 Ex. 4 ab d = c ,x ,b ...let's try a couple more... solve for the indicated variable Ex. 5 Ex. 6 ,b solve for x Real World Problem Solving Ex. 7 The formula gives the Celsius temp. C in terms of Fahrenheit temp. Transform the formula to find Fahrenheit temp. in terms of Celsius temp. Then find the Fahrenheit temp. when the Celsius temp. is 30 degrees. C = 5 (F 32) 9 Ex. 8 You can use the number of chirps (n) a cricket makes in one minute to estimate the outside temp. F in degrees Fahrenheit. Transform the formula to find the number of chirps in terms of temp. How many chirps per minute per minute can you expect if the temp. is 60 degrees? F = n + 37 4 Ex. 9