1. WARM-UP: SOLVE FOR X. x = -7 x = 50 15000 m

2. HOMEWORK REVIEW

4. CCGPS COORDINATE ALGEBRA DAY 4 UNIT QUESTION: Why is it important to understand the relationship between quantities? Standard: MCC9-12.N.Q.1-3, MCC9-12.A.SSE.1, MCC9-12.A.CED.1-4 Today’s Question: How are unit conversions performed, and why is it important? Standard: MCC9-12.N.Q.1 and N.Q.2

5. LET’S BEGIN TO TALK ABOUT DIMENSIONAL ANALYSIS… What is the reciprocal of ? What is

6. What is

7. OUR GOAL WITH DIMENSIONAL ANALYSIS IS TO MAKE UNITS CANCEL OUT TO…… 1

8. STEPS: 1.Given quantity w/its unit 2.Set up conversion factor 3.Divide Units – only the desired unit should be left 4.Solve the problem

9. EXAMPLE 1 Let’s look a the metric problems a different way. Convert 35m to km.

10. An aspirin tablet contains 325 mg of active ingredient. How much is this in cg? EXAMPLE 2 325 mg1 cg = 325 110 mg 10 = 32.5cg of active ingredient

11. EXAMPLE 3 Bob studied for 2.5 hrs. How many minutes did he study for? Initial unit = hr.Final unit = _______

12. HOW MANY MINUTES ARE IN 2.5 HOURS ? Initial unit 2.5 hr Conversion Final factor unit 2.5 hr x 60 min = 150 min 1 hr DIVIDE OUT

13. EXAMPLE 4 How many seconds are in 1.4 days? Unit plan: days hr min seconds 1.4 days x 24 hr x ?? 1 day 13

14. SOLUTION Unit plan: days hr min seconds 1.4 day x 24 hr x 60 min x 60 sec 1 day 1 hr 1 min = 120,960 sec

15. EXAMPLE 5 John Isner serves 140 miles per hour. How fast is that in feet per second?

16. SOLUTION 140 miles x 5,280 ft. x 1 hr x 1 min = 1 hr 1 mile 60 min 60 sec. = 205.3 ft/sec.

17. EXAMPLE 6 If a 3 day boating trip covers 150 miles and you are boating 5 hours a day, how many miles must you boat each hour? 10 miles per hour

18. CW/HW LITERAL EQUATIONS & DIMENSIONAL ANALYSIS WS