Unit 4
Is it possible to draw two unique quadrilaterals with one pair of opposite sides being 4 inches and the other pair of opposite sides being 6 inches? Explain. Enter the answer.
yes; One of the quadrilaterals could be a rectangle and the other could be a parallelogram that is not a rectangle.
Destiny bought 19 tokens to play games. She used some of the tokens. Now she has 4 tokens left. What is the percent decrease in the number of tokens that she has?
78.95%.
Evaluate a/b if a = 65 and b = 5
65/5=13
The number you multiply by to enlarge or shrink a shape. For example, if a drawing is enlarged by 2, the new image will be twice as large as the original.
Scale Factor
What does PEMDAS stand for?
Parentheses
Exponents
Multiplication
Division
Addition
Subtraction
Amanda has to pay $20.14 for her lunch. She decides to leave a 22% tip. What is 22% of $20.14 and what is the total amount she paid.
4.43, and the total amount she paid is $24.57.
The test scores of 10 students in a history class are shown.
90, 75, 81, 99, 80, 83, 91, 94, 72, 89
What score would you expect a student in the history class to receive on the next test? Explain. Enter the answer.(find the mean)
86.4
Which of the following is the decimal representation of 7/18?
7/18=0.389
A way to compare two numbers. It shows how many times one number contains another. For example, if you have 4 apples and 2 oranges, 4:2
Ratio
What is the formula for finding the volume of a rectangular prism?
Length x Width x Height
Demi's pool is filling with water at a rate of 1/9 of the pool every 30 minutes. How many minutes will it take for her pool to be 62% full of water?
558 minutes
An employer is expecting 19 candidates to interview for a job. There are actually 12 candidates that interview for the job. What is the percent error of the employer’s expectation?
36.84%.
add 2 and 4/10 + 3 and 1/3
(2 + (4/10)) + (3 + (1/3)) =5.733
The number you add to it to get zero. For example, 5 is -5 because 5 + (-5) = 0.
Additive inverse
What is the formula for finding the percent of change
(new value-old value / old value) x 100
A circular patio has a circumference of 38.2 feet. Find the approximate diameter of the patio. Use 3.14 for π. Round to the nearest hundredth if necessary.
12.17feet
Janice opens a savings account with $500. She does not make any additional deposits or withdrawals. After one year, the amount in her savings account is $539.80. What is the annual interest rate of Jill’s savings account?
7.96
Evaluate the expression
2 x (32+5) + x if x = 4
2 x (32+5) + 4 =78
A way to show repeating decimals. It’s used when a number has a part that repeats forever. For example, 0.3‾
Bar Notation
What is the formula for finding the circumference of a circle?
2πr
John is assembling a storage shed. The bases of the prism are the front and back of the shed. The bases are pentagons shaped like a rectangle with a triangle on top. The pentagon has a base length of 14 feet, vertical side lengths of 9 feet, and an overall height of 8 feet, measured from the base to the peak of the roof. The shed is 10 feet long.
Find the volume of the shed. Enter the answer.
1,820 cubic feet.
Rj paid a total of $21.28 on a purchase of $18.99. What is the sales tax rate? Enter the answer.
12.77%
Evaluate this expression
3 x (43+5) + 2x if x =6
3 x (43+5) + 2(6) =156
Any number that can be written as a fraction, where both the top number (numerator) and bottom number (denominator) are integers, and the denominator is not zero. For example, 34 and −2
Rational Number
What is the formula for finding the area of a circe?
πr2