Day 4 formulas
- 1. AIM: Using Formulas Do Now 1
- 2. A B C D A.) 31,750 g B.) 28.13 kg C.) 3.62 kg D.) 28,130g 2
- 3. Anticipatory Set: How have you seen formulas used in the real world? 3
- 4. Using Formulas- Formulas are equations that show the relationship between quantities that are represented by variables. The formula to find the area of a rectangle is Area = base • height 4
- 5. Draw a sketch and use the formula to solve the following problems. 1. The length of a rectangle is 4 and the width is 8. What is the area? 5
- 6. 2. The area of a rectangle is 48 and the length is 8. What is the width? 6
- 7. 3. The width of a rectangle is 9 and the area is 135. What is the length? 7
- 8. 1 d = rt, where d = distance, r = rate, and t = time If you travel at 4 feet per second for 138 second, what is the distance traveled? 8
- 9. 2 d = rt, where d = distance, r = rate, and t = time If you traveled 612 miles in 12 hours, what was the speed? 9
- 10. Egg Density Mass of egg = ____ Volume of Egg = ___ Density of Water = 1 g/mL Will a soda can float in water? Soda Density 10
- 11. 3 The formula for finding density of an object is , where d = density, m = mass, and v = volume. What is the density of an object if the volume is 4 cm3 and the mass is 64 grams? 11
- 12. 4 The density of silver is about 11 g/cm3. What would the mass of a silver sample be if the volume is 45cm3? 12
- 13. 5 You find the volume of a sample of copper to be 35 cm3. The density of copper is about 9 g/cm3. What would the mass of your sample? 13
- 14. BEFORE YOU LEAVE 14 ft 20 ft 1. Find the perimeter of the rectangle above 2. Write a formula to find the perimeter of any rectangle. Combine any like terms to express the formula in simplest form. Let P = Perimeter 14
- 15. BEFORE YOU LEAVE PART 2 3. What is the perimeter of a rectangle whose length is 16 inches and width is 2.5 inches? Use the formula. 4. What if the perimeter was 20 and the length was 3? Use the formula. 15
- 16. Mr. Tjersland's Math 7 Homework: Castle Homework #10 due tomorrow 16
- 17. AIM: Using Formulas d = rt, where d = distance, r = rate, and t = time If you travel at 4 feet per second for 138 second, what is the distance traveled? If you traveled 612 miles in 12 hours, what was the speed? 17
- 18. AIM: Using Formulas The formula for finding density of an object is , where d = density, m = mass, and v = volume. What is the density of an object if the volume is 4 cm3 and the mass is 64 grams? The density of silver is about 11 g/cm3. What would the mass of a silver sample be if the volume is 45cm3? 18