Wednesday, August 21st Please complete the warm up

1. 5mm=__________km

2. How many pints are in 7.5 quarts?

HomeworkAnswers

MetricRace

I. REVIEW INEQULITIE

S

1. Silvia is saving to buy a laptop that costs $1,100. So far she has saved $400. She makes $12 an hour babysitting. What’s the least number of hours she needs to work in order to reach her goal?

1,100≤400 + 12x

2. Joe can spend at most $50 on a pair of pants. He also has a $10 coupon. Write an inequality that represents how much Joe can spend.

50 ≥ j – 10

WHAT DID BRAD PITT DO WRONG?How many cups are in 5 pints?

1 5 int

4 int

20 int

cup p s

p s x

p s

COMPARE AND CONTRASTCustomary Metric

TIME CONVERSIONS

EXAMPLE 1

1. Bob studied for 2.5 hrs. How

many minutes did he study for?

Initial unit = hr. Final unit =

_______

HOW MANY MINUTES ARE IN 2.5 HOURS?

Initial unit 2.5 hr Conversion

Final factor

unit2.5 hr x 60 min = 150

min 1 hr

cancel Answer (2 SF)

EXAMPLE 2

How many seconds are in 1.4 days?

Unit plan: days hr min seconds

1.4 days x 24 hr x ?? 1 day

LecturePLUS Timberlake 12

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

EXAMPLE 3

John Isner serves 140 miles per hour. How fast is that feet per second?

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.

EXAMPLE 4

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