Statistics and probability
Tori has the following data:
3 x 1 3 1
If the mean is 2, which number could x be?
7 or 2?
2
Divide.
2 ÷ 1 1/3
6/4 or 1 2/4 or 1 1/2
Are the ratios
9:18 and 1:2 equivalent?
Yes or No?
Yes
Write the expression using an exponent.
2 x 2 x 2
23
What is the area of a rectangle with a length of 5 cm and a width of 8 cm
A = 40 cm2
What is the mode?
4 0 2 4 4 2
A school needs to buy 56,000 pencils for its students. If the pencils come in packages of 8, how many packages should the school buy?
7,000
A 3-pack of ice cream bars costs $1.26. What is the unit price?
$_________ per ice cream bar
$0.42
Write an expression for the operation described below.
Multiply 8 by b
8b
What is the volume of a cube with a side length of 6 inches?
216 in3
A florist used 18 flowers to make a bouquet, including 9 daisies.
What is the probability that a randomly selected flower will be a daisy?
Write answer in simplest form
1/2
-5 + 1
-4
Do the ratios
4/1 and 16/4 form a proportion?
Yes
Simplify the expression:
7y - 3y
4y
What is the area of a circle with a radius of 8 feet?
200.96 ft2
You pick a card at random.
6 7 8 9
What is P(8) in a percent?
25%
-21(5)
-105
What is 40% of 50?
Solve for x.
3x + 5 = 14
x = 3
Greg drew a scale drawing of a campsite. The tent, which is 14 feet long in real life, is 7 inches long in the drawing. What scale did Greg use for the drawing?
1inch = _____ feet
2 feet
You roll a 6-sided die two times.
What is the probability of rolling a 3 and then rolling a number less than 2?
1/36
2 3/5 x -0.5
-13/10 or -1 3/10 or -1.3
____% of 60 = 12
20%
Solve for x
-4x - 5 = -9
x = 1
what is the circumference of a circle with a diameter of 12 inches?
37.68 in.