Proportions and Percents
Jenny buys a sweater at a department store. The sweater costs #30. The store is having a 25% off sale. Enter the amount of money, in dollars, Sara saves from the sale. Do not consider sales tax.
$7.50
Enter the value of b when the expression 9x+b is equivalent to 3(3x+1).
b=3
Enter the decimal equivalent of 11/8.
1.375
Carol flips a fair coin. The coin lands on heads 5 times in a row. Enter the probability that the next toss will land on tails.
50% or .5 or 1/2
A trail mix recipe calls for 21 grams of peanuts for every 6 grams of raisins. Enter the number of grams of peanuts in a bag for every 1 gram of raisins.
3.5. grams
c=-13.78
Mario claims that any fraction located between 1/5 and 1/7 on a number line must have a denominator of 6. Enter a fraction that show's Mario's claim is incorrect.
Many correct answers
Angle X and Angle Z are complementary. Enter the measure of Angle Z if Angle X is 32 degrees.
58 degrees
A clothing store marked down the price of shirts by 25%. The store also marked down the price of a pair of jeans by 30%.
Ben purchased a shirt whose original price was $32.
Ben purchased a pair of jeans whose original price was $40.
Enter the amount Ben saved.
$20
Jenny has $25 and she earns $10 for every lawn that she mows. Jenny wants to buy a concert ticket that costs $65. Enter an inequality that can be solved to show the minimum number of lawns Jenny has to mow to have enough money for the concert ticket.
25+10x>65
Enter the value of -5(13.5-4.5)
-45
The circumference of a circle is approximately 37.7 centimeters. Enter the radius of the circle, in centimeters. Round your answer to the nearest whole number.
6 cm
When playing basketball, Jan makes 4 out of every 10 shots she takes. Select all the statements that describe Jan's situation
A: The ratio of the number of shots Jan makes to the number of shots she takes is 2:5
B:The ratio of the number of shots Jan makes to the number she does not make is 2:3
C: The equation 4x=10y shows the relationship between x, the number of shots Jan makes, and y, the number of shots she takes
D: The equation 6x=4z shows the relationship between x, the number of shots Jan makes, and y, the number of shots she does not make
A, B, C
Lenny bought a motorcycle. He paid 12.5% in tax. The tax added 1437.50 to the price of the motorcycle. What was the price of the motorcycle, not including tax?
$1,277.78
Select all values equivalent to -10/7
-10/-7
-3 1/7
1 3/7
-(-10/-7)
-1 3/7
-(-10/-7)
-1 3/7
A principal wants to know if students at his school are in favor of a new dress code. The principal is not able to ask the opinion of every student at the school, so she needs to select an appropriate sample of the students to represent the school. Which should she choose?
A: Students randomly selected from a list of all students at the school
B: Students sitting at randomly selected tables in the library
C: Students she selects from the hallway between classes
D: Students selected by the teachers
A
Find the value of x so that the ratios represent a proportional relationship:
17.4 : 52.2
3.1 : x
x=9.3
Marcus has a pool that can hold a maximum of 4500 gallons of water. The pool already contains 1500 gallons. Marcus begins to add more at a rate of 30 gallons per minute.
Enter an inequality that shows the number of minutes, m, Marcus can continue to add water to the pool without exceeding the maximum number of gallons.
1500+30m<4500
Which of the following will always give a negative answer when multiplying two integers?
A: Both integers are positive
B: One integer is positive, and one is negative
C: Both integers are negative
B
Johnny uses a wheelbarrow to move planting soil to a delivery truck. The volume of soil that fits in the wheelbarrow measures 2 feet by 3 feet by 1.5 feet. The delivery truck measures 11 feet by 8 feet and is 6 feet tall. Johnny puts soil in the delivery truck until it is 70% full.
What is the minimum number of times Johnny needs to use the wheelbarrow until the truck is 70% full?
42 times