Probability
Destini places the letters in the word OCTOBER into a bag. What is the probability of Destini selecting a B?
1/7
In Texas the state sales tax was 6%. If Beth purchases a washing machine at $420.00 then how much will Beth pay in State sales tax?
$25.20
Jameson pays $39.90 for 3.8 pounds of almonds. What is the price per pound of almonds?
$10.50 per pound of almonds.
Miguel made a scale model of the Empire State Building. The building has an actual height of 381 meters. Miguel's model used a scale in which 1 cm represents 50 meters. What is the height in centimeters of his model?
7.62 centimeters
What is the mode?
Most
What is the sample space for flipping a coin and rolling a dice?
Heads, 1
Heads, 2
Heads, 3
Heads, 4
Heads, 5
Heads, 6
Tails, 1
Tails, 2
Tails, 3
Tails, 4
Tails, 5
Tails, 6
A spool of ribbon has 18 feet. Pieces measuring 8 inches will be cut from the spool of ribbon. How many 8 inch segments will be able to be cut from the spool of ribbon?
27 pieces
Edgar pays $67.86 for 7.8 pounds of fertilizer. What is the price per pound of fertilizer?
$8.70 per pound of fertilizer.
What is the diameter of the circle?
The distance all the way across a circle (goes through the center).
How do you calculate the mean?
Add all data points together, then divide by the number of data points.
Kai hears that tonight’s meteor shower should produce 20 meteors per hour. If she looks at the night sky during the meteor shower for 1 minute, what is the probability she will see a meteor?
1/3
Mrs. Salinas purchased 3.4 pounds of trail mix that costs $4.25 per pound. How much change should she receive if she gives the cashier $20?
$5.55
A Hot air balloon travels 18 miles in 3 hours. At this rate, how many miles will the hot air balloon travel in 3/4 hour?
4.5 miles
Miguel measures 5 kg of rice. One kilogram is approximately equal to 2.2 pounds. Which measurement is closest to the number of pounds of rice?
11 pounds of rice.
How do you find the median of a dot plot?
Find the middle dot by crossing off the highest, lowest, highest, lowest. Until you find the center dot.
A basket of beads contains 8 red beads, 6 yellow beads, and 6 green beads. A bead will be drawn from the basket and replaced 150 times. What is a reasonable prediction for the number of times a green bead is drawn?
A green bead will likely be drawn 45 times.
The local volleyball team hosts a concession stand to raise money. They spend $120 to purchase popcorn, candy, and drinks. They buy 95 bags of popcorn at $0.75 each and 35 bags of candy at $1.20 each. How much money does the volleyball team have left to spend on drinks?
$6.75
Diana uses 30 grams of coffee beans to make 48 fluid ounces of coffee. When company comes over she makes 100 fluid ounces of coffee. How many grams of coffee beans does she use when company comes over?
62.5 grams of coffee beans.
What are similar figures?
Similar figures have congruent angles (same shape) but are different sizes (proportional side lengths).
What are the five numbers you can determine from a box plot?
Minimum, lower quartile (Q1), median, upper quartile (Q3), and maximum
A toy factory produces 280 fidget spinners per day, and each spinner is tested before it is packaged and shipped. After testing the first 40 spinners, Carlos finds 3 of them to be defective. Based on these results, which of the following is likely the total number of defective spinners on that day?
Carlos will most likely find 21 defective spinners.
A courier service charges a $5 pick up fee plus $0.15 per mile. The total charge to deliver a package was $7.85. How many miles did the courier service travel to deliver the package?
19 miles.
What is the value of x in the following equation?
-4x + 8 = 42
x = - 9
A coffee shop sign is in the shape of a circle. The sign measures 18 inches across
in diameter. Which measurement is closest to the area of the sign in square inches?
254.34 inches2
What is the difference between range and interquartile range?
Range is max - min.
Interquartile range is upper quartile - lower quartile and can only be determined from a box plot.