If Morgan tosses a fair coin 4 times, what is the probability that he will get exactly two heads and two tails? - ANSWERS1. 2 x 2 x 2 x 2 = 16 possibilities.
2. Make a systematic listing :
HHTT HTHT TTHH THTH THHT HTTH
3. There are 6 outcomes with 2H and 2T, so 6/16 = 3/8
Shopmart is selling...
CHSPE MATH PRACTICE QUESTIONS &
ANSWERS
If Morgan tosses a fair coin 4 times, what is the probability that he will get exactly two
heads and two tails? - ANSWERS1. 2 x 2 x 2 x 2 = 16 possibilities.
2. Make a systematic listing :
HHTT HTHT TTHH THTH THHT HTTH
3. There are 6 outcomes with 2H and 2T, so 6/16 = 3/8
Shopmart is selling a multi-disk DVD sets of Dr. Who episodes at $2 per-disk discount
from its usual price of $15.95. What is the percentage reduction, to the nearest whole
percent, on these disks? - ANSWERSamount off / original price = 2/15.95 = 12 percent
Approximately how great was the average annual percentage difference in the
unemployment rate from the peak of the Great Recession to 2016? - ANSWERSHighest
value = 10 percent est.
Lowest value = 4 percent est.
10-4 = 6
6 percent divided by 6 years
= 1 percent per year
What is the ratio of the slope of line A (2,4) to line B (4,1) ? - ANSWERSFind the slop of
both lines to determine their ratio.
- the slope is the ride divided by the run
- 4/2 = 2 & ¼
the ratio is 2/ ¼
- multiply both top and bottom by 4
= 8/1
Mean, Median, Mode - ANSWERS*Mean:* Add all #, then divide by how many # there
are
~"Average"
*Median:* Middle # of ordered (Least to Greatest) list. If # are even, then the 2 middle #
averaged out.
*Mode:* tthat occurs the MOST. Can be more than one.
Range: Subtracting the minimum value from maximum value
Volume of a cylinder - ANSWERSV=πr²h
Celsius to Fahrenheit - ANSWERS(C x 1.8) + 32
Fahrenheit to Celsius - ANSWERS(F-32)/1.8
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