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Do Now 4/5/11. Take out HW from yesterday. Text p. 295, #6-12 all Copy HW in your planner. Textbook page 309, #3-7 all, 11a & b, 17 & 18 In your notebook, find the length of BF given that ABCD ~ CEFG. B. F. C. x. 9 cm. 12 cm. E. G. 4 cm. A. D. 6) 24 inches
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Do Now 4/5/11 • Take out HW from yesterday. • Text p. 295, #6-12 all • Copy HW in your planner. • Textbook page 309, #3-7 all, 11a & b, 17 & 18 • In your notebook, find the length of BF given that ABCD ~ CEFG. B F C x 9 cm 12 cm E G 4 cm A D
6) 24 inches 7) 15 mm 8) 9 cm 9) 12.5 yd 10) 6 ft 11) 9 m 12) a. 63 in. b. 15.75 ft. or 15 ft. 9 in. HomeworkText p. 295, #6-12 all
Objective SWBAT find the probability of an event.
Section 6.7 “Probability and Odds” Experimental probability- performing an experiment and testing data. Theoretical probability- mathematically tells you how likely it is that an event will happen.
“Interpreting Probabilities” • The probability of something occurring is always between 0 and 1. Likely to occur Unlikely to occur 0.25 0.75 1 0 0.5 Occurs ½ the time Certain to occur Impossible
“Theoretical Probability” A probability is always written as a ratio or fraction Number of RED regions Total number of regions What is the probability (your chances) of landing the spinner on a RED region? How about a BLUE region? How many denominations is the whole broken up into? How many are RED?
“Experimental Probability” Draw the following circle chart on your paper. Shade in the blue areas on your chart with your pencil. Using your pencil and a paperclip spin your spinner 8 times. Record the number of times where the spinner stopped. Do your experimental outcomes match the theoretical outcomes? Why or why not?
“Roll the Dice” • Suppose you are rolling a two 6-sided number cubes and finding the sum of the rolls. What is the probability that you will roll a 7? What is the probability that you will roll a prime number? a composite number?
NJASK7 Prep Homework • Textbook page 309, #3-7 all, 11a & b, 17 & 18