Review Math Quadratic Equations through Quadratic Formula

Quadratic Equations by quadratic formula

1. PRESENTATION TITLE Mirjam Nilsson​

2. Recurring Decimals Write the decimal   2 TIP: count how many time you move the decimal point to leave the recurring digit(s) to the right. 0.23434  3 decimal points to get 234.3434 thus you need to multiply by 1000

3. Reverse percentages Review

4. What percentage change means? Percentage increase Php 200 increase 5% = Php 210 100% + 5%= 105% 200 x 1.05 = 210   Percentage decrease Php 200 decrease 5% = Php 190 100% - 5% = 95% 200 x 0.95 = 190   4

5. What multiplier would you use to Presentation title 5

6. Reverse percentage 6

7. A phone costs $345 after a 15% increase. What was the original cost of the phone? New amount = $345 Percentage multiplier Increase  1 00% + 15% = 115% = 1.15 The original cost was $ 300   7

8. A pen costs $1.35 after a 10% discount. What was the original cost? New amount = $1.35 Percentage multiplier De crease  1 00% - 10%= 90% = 0.90 The original cost was $1.50   8