True Statements
Is Mrs. Kleinbach the coolest math teacher ever?
YES
What is the probability of rolling a 5 on a number cube?
1/6
What is the probability of getting heads when flipping a coin?
1/2
What is the probability of getting a good grade on CBA 8?
12/12 or 1/1 or 100%
Area of rectangle
A = lw
Robert is ordering an ice cream sundae with one topping. He can choose hot fudge, strawberry sauce, or caramel sauce topping. Complete the outcomes below.
Topping: Ice cream:
Hot Fudge < chocolate
_______
_________< Chocolate
Vanilla
Caramel Sauce< _________
Vanilla
Vanilla
Strawberry Sauce
Chocolate
What is the probability of rolling a number less than 2 on a number cube?
1/6
A bag holds 6 green, 3 red, and 4 blue marbles. A marble is selected at random. What is the probability of NOT selecting a blue marble?
9/13
You roll a number cube 24 times. What is the probability of rolling a 5 or 6?
8 times
Area of triangle
A= 1/2(bh)
Bruce took a survey of high school students who had part time jobs last summer. The results show the number of students who had a summer job in each grade level. Freshman: 8 Sophomore:4 Junior:12 Senior:9 One student is picked at random. Based on the given information, which statement is true?
a. The student is equally likely to be freshman, sophomore, junior or senior
b. The student is 4 times likely to be a senior than sophomore
c. The student is 3 times likely to be a junior than a sophomored
d. The student is more likely to be a freshman than a senior
c.
What is the probability of rolling a 4 or greater on a number cube?
3/6 simplified 1/2
Gaby has 5 pink bows, 2 white bows, 1 blue bow, and 4 purple bows in a box. She will randomly choose 1 bow from the box. Choose the correct answer to complete the statement. The probability Gaby will choose a __________ bow is 1/3.
Purple bow
You flip a coin 100 times what the probability of getting tails?
50 times flipping heads.
Area of Circle
A= pi x r2
A store manager receives a delivery of 2 boxes of lightbulbs. Each box contains 25 lights. The store manager tests the lightbulbs and finds that 2 of them are defective. Based on these results what can the store manager predict about the next delivery of lightbulbs.
a. A delivery of 3 boxes will contain 3 more defective lightbulbs than a delivery of 2 boxes.
b. A delivery of 4 boxes will contain 2 more defective lightbulbs than a delivery of 2 boxes.
c. A delivery of 5 boxes will contain 10 more defective lightbulbs than a delivery of 2 boxes.
d. A delivery of 6 boxes will contain 3 more defective lightbulbs than a delivery of 2 boxes.
B.
Jason rolls two fair number cubes. The faces of the number cubes are labeled 1 through 6. Jason rolls the number cubes at the same time, list all the outcomes in which the sum of the rolls is 6?
(1,5) (2,4) (3,3) (4,2) (5,1)
A bag contains 3 yellow marbles, 4 green marbles, 6 blue marbles, and 7 red marbles. A marble will be drawn from the bag and replaces 140 times. What is the reasonable prediction for the number of times a yellow or blue marble will be drawn?
3+6 = 9
9/20 = ?/140
Cross multiply and divide
63 times a yellow or blue marble will be drawn
David has a bag of coins. The bag contains 9 dimes, 4 nickels, and 3 pennies. He will randomly select 2 coins from the bag one a tie without replacement. What is the probability that David will select a nickel the first and then a dime?
4/16 simplified 1/4
9/15 simplified 3/5
(1/4) x (3/5) = 3/20
Area of a parallelogram
A=bh
Gabriel tossed a paper cup 60 times and recorded how the cup landed each time. He organized the results in the data:
Outcomes: right side up-9 Upside down-11 on its side-40
Which state is best supported by the results above. If Gabriel tosses the paper cup 90 times.
a. More than 50 cups will land on their side.
b. Less than 30 cups will not land on right side up.
c. Less than 30 cups will land either right side up or upside down.
d. More than 50 cups will land upside down.
a.
You roll a number cube labeled 1 through 6, one time. What is the probability that you roll a number that is less than 3?
2/6 simplified 1/3
Gabriel has these cans of soup in his kitchen cabinet. 4 cans of tomato, 3 cans of chicken, 2 cans of cheese, 5 cans of beef. Gabriel will randomly choose one can of soup. Then put it back and will randomly choose another can of soup. What is the probability that he will choose a can of tomato soup and then a can of cheese soup.
2/14 simplified to 1/7
(2/7) x (1/7) = 3/49 probability
Data collected in a mall recorded the show color worn by 30 customers. Based on information if there are 360 customers in the mall, how many customers would you expect to have a black shoe on?
Black shoes :13
Brown shoes: 17
156 people will have black shoes on.
Area formula for a trapezoid
A = 1/2(b1 +b2)h