probability
Sandwiches are being made with rye and white bread. Meat choices are ham or turkey, and the sandwich can have cheese or no cheese. Martha chooses a sandwich from the tray. What are the chances Martha will choose a sandwich with cheese?
1/2
Cleopatra is paid $11.50 per hour. She worked 20 hours. She gave her mother 1/5 of her earnings. How much did Cleopatra have left
184.00
Wayne earned $10.50 per hour at his job.
7.88 or 7.87
What is the area of a circle with a diameter of 10?
78.5
A 5-lb bag of oranges costs $3.25, and an 8-lb bag costs $6.52. Gino found the unit price, which is the constant of proportionality between the cost and the weight. What is the difference in the unit prices?
16 or 17 cents
Here are Joshuas and Sams quiz scores. What is the difference in the students medians
Joshua: 70 60 80 90 90 100 80.
Sam: 100 50 90 90 70 70 70.
10
80-70
Which expression has the least value when x = 1000
a. 1/x
b. 10/x
c. 1 – x
d. 10 – x
c
1-1000=-999
Write an equivalent expression to:
1/2 ( 3m + 5)
1.5m + 2.5
Which of the following will form a triangle?
a. 280 1050 920
b. 900 900 100
c. 450 450 450
d. 450 900 450
d.
A car used 2/3 of a gallon of gas to drive 1/4 of a mile. At this rate, how many miles can the car travel using 1 gallon of gas?
3/8 of a mile (gas hog)
Scarlet wants to pick an outfit for the school dance. She can choose from 4 pairs of pants, 3 shirts, and 5 pairs of shoes. How many different outfits does Scarlet have to choose from?
60 outfits
A library has 1,500 fiction books and 2,000 nonfiction books.
900
Write an equivalent expression to:
3(4n + 8) + 6 - 11n
n + 30
Two angles are complementary. One angle is (4x)0 the other angle is (2x + 6)0 . What is the value of x.
a. 10 b. 12 c. 14 d. 16
c
David’s weekly earnings were proportional to the number of hours he worked. This table shows the number of hours David worked and the amount he earned.
hours Earnings ($)
6 $51
8 $68
10 $85
12 $102
How much money did David earn per hour?
$8.50
A spinner equally divided into 4 parts numbered 1 , 2 , 3 , 4 is spun twice.
What is the probability of spinning an odd number both times?
a. 1/8 b. 1/4 c. 1/2 d. 3/4
b.
1/2 x 1/2
0.66666...
Write an expression equivalent to 4( 3 - v ) – 10 + 4v
2
What is the volume of a a triangular prism with an base area of 9cm2 and a height of 4cm?
18cm3
A recipe requires 5/6 cup of water for every 1/4 cup of rice. How much water (in cups) is needed per cup of rice?
3 1/3 or 10/3
Cindy wants to conduct a survey of the opinions of students at her high school. Which survey sample would give her the most accurate results?
a. Random students as they enter the school.
b. Students during math class.
c. Random 10th grade students during lunch
d. Teachers in the twelfth grade hallway
a.
Tracy earned $9.00 per hour at her job.
13.50
Tanya bought x notebooks. She paid $1.50, including tax, per notebook. She gave the cashier $42 and received $6.00 in change. How many notebooks did she buy?
24 notebooks
Two angles are supplementary. One of the angles is obtuse with a value of x0 . The second angle has a value of (1/2x)0 . What is the value of x?
x= 120
Ginger can make 3/5 of a bracelet in 15 minutes. At this rate, how many bracelets (to the nearest tenth of a bracelet) can she make in 1 hour?
2.4 bracelets