HOMEWORK: Formulas Worksheet

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HOMEWORK: Formulas Worksheet Sec 4: Formulas Learning Target: Students will use a given formula to find a missing quantity in real-world and mathematical situations.

ACT Practice The formula for converting Celsius to Fahrenheit is 𝐹= 9 5 𝐶+32. What is the degrees in Celsius if the temperature is 82° Fahrenheit to the nearest degree? A. 27 B. 28 C. 63 D. 1 E. 90 Answer: B

Ex 1: Practice with Formulas Solve for the missing variable. Area of a Circle: 𝐴= 𝜋 𝑟 2 Given: Area = 16𝜋 Pythagorean Theorem: 𝑎 2 + 𝑏 2 = 𝑐 2 Given: Distance Formula: 𝑑= 𝑥 1 − 𝑥 2 2 + 𝑦 1 − 𝑦 2 2 Given: (2, 5) and (-1, 4) 15 12

Ex 2: Word Problems! Find S using the formula 𝑆= 𝑎(1− 𝑟 𝑛 ) 1−𝑟 if a = -2, r = 2 and n = 3. A. 14 C. 2 E. 7 B. -14 D. -2 2. 𝐴= 2𝑔𝑟 𝑔+𝑟 . What is the value of g when r = 1 and A = 4? -2 C. 4 E. 8 5 2 D. 4 7

Ex 3: Trickery! The formula ℎ=150𝑡 −16 𝑡 2 gives the height h in feet of an object t seconds after it is shot upward from Earth’s surface with an initial velocity of 150 feet per second. What will the height of the object be after 3 seconds?

HOMEWORK Formulas Worksheet