trigonometry
fill in the blank
When we deal with triangles, we need to be able to properly label all the sides and all the _______. angles are labelled with ____________ letters,_____ are labelled with lower case letters. we always label sides based on their_______ angles.
When we deal with triangles, we need to be able to properly label all the sides and all the angles. angles are labelled with upper case letters, sides are labelled with lower case letters. we always label sides based on their opposite angles.
expand and solve
35
expanded: 3 x 3 x 3 x 3 x 3
solved: 243
example of a voluntary sample
online surveys or even a phone call survey
express each time period in Years
6 months 18 months
6 months would be 0.5 years
18 months would be 1.5 years
explain briefly what probability is
its the chances of something happening
name the three sides of a right triangle
opposite
adjacent
hypotenuse
Simplify then solve.
3x X 3x X 3x
simplified version (3x)3
solved version 27x3
what are the 5 sampling techniques
simple random sample
stratified sample
cluster sample
convenience sample
voluntary sample
express each time period in years
26 weeks 12 weeks
26 weeks is 0.5 years and 12 weeks is .23 years
what are the chances of rolling a 5 on a dice. Say the percentage, fraction and decimal.
there is a 16.6% chance. 0.16 is the decimal chance. 16/100 is the fraction chance
what's sides are used when using SIN
opp/hyp
expand then solve
63 X 66
expand: 6 x 6 x 6 x 6 x 6 x 6 x 6 x 6 x 6
solve: 6 3+6 = 69 = 10,077,696
example of a cluster sample
all grade 9's and 11's in a school
express each time period in years
100 days 40 days
100 days is 0.27 years and 40 days is 0.11 years
what are the chances of picking a face card in a deck of 52.
there's a 23% chance of getting a face card
what sides are used when using COS
adj/hyp
solve
(44)3
16,777,216
what is an example of simple random sample
drawing a name from a hat
if you invested $20,000 in an account that earned 5% simple interest, what would your investment be worth after 15 years
$35000
explain what a histogram is used for
A histogram is used to present the outcome of a probability
experiment. A histogram is like a bar graph, but the bars don't
touch.
what sides are used when using TAN
opp/adj
simplify and solve
(2xy2)(x2y)(3x2y2)
final answer will be
6x7y6
nick and Oscar surveyed all the students watching last weeks basketball game about their interest in basketball. after they finished they went to there principal telling them that they should make more teams for basketball. what is wrong with there research.
people at the basketball game like that sport so they will end up choosing basketball. this survey is bias
how many times does each schedule occur in one year
daily
weekly
bi weekly
monthy
semi monthly
annually
semi annually
quarterly
daily-365
weekly-52
bi weekly-26
monthy-12
semi monthly-24
annually-1
semi annually-2
quarterly-4
what is theoretical probability
the number of successful outcomes as a fraction of the total number of possible outcomes