Which of the following is NOT a rational number?
0, -10, 4.3, 1800, 9.8888, 3.14159...
3.14159 (this is pi btw)
Write an expression that represents "4 times a number plus 18".
4x + 18
At Alexander High School, there are 45 boys for every 60 girls. What is the ratio of boys to girls?
45:60 or 45/60 or 45 to 60
Complementary angles are angles whose sum is equal to _______.
90 degrees
A marble is chosen at random from a bag that contains 8 blue marbles, 3 red marbles, and 6 yellow marbles. What is the probability of picking a red marble? Express your answer as a fraction, decimal, or percent.
3/17, 0.18, 18%
Which is bigger? |-19| or |-10|
|-19|
Simplify the expression:
-3(10x - 2)
-30x + 6
Yes
C = 61
Triangle sum theorem states that the sum of all angles of a triangle equal 180 degrees.
In bag full of blue and green marbles, what is the probability you will pick a blue or green marble? Express your answer as a fraction, decimal, or percent.
1 or 100%
Evaluate: -10 + 9(2) - 8
0
What are the three situations in which you have to flip the inequality symbol?
1. Multiplying by a negative on both sides.
2. Dividing by a negative on both sides.
3. Changing sides the variable is on.
Paula went to the farmers market to buy apples. She bought 4 lbs of apples for $7.95. How much does one apple cost? Round to the nearest cent!
$1.99 (you found the unit rate)
Find the area of a circle whose radius is equal to 6cm.
Area = 113.04cm^2
Find the mean, median, mode, and range of the follow data set:
14, 18, 12, 16, 30
Mean=18
Median=16
Mode=none
Range=18
5 3/8
Solve the inequality:
-5x - 3 > 12
x < 3
The ratio of children to teachers at a preschool is 14:5. How many children are at the preschool if there are 30 teachers?
84 children
If the circumference of a circle equals 102yd, find the diameter.
d=32.48yd
Draw a box and whisker that represents the data below:
2, 8, 5, 3, 8, 9, 4
Q1=3
Median=5
Q3=8
Max=9
Subtract:
5 3/10 - 4 3/4
11/20
Solve the equation:
2(x + 1) - 7 = 5
x = 5
345 Miles
Find the surface area of rectangular prism where the length= 40m, width= 20m, and the height= 4m
SA = 2080m^2
Find the mean absolute deviation of the data set below: Round to the nearest tenth if needed.
20, 23, 38, 45, 27, 40
MAD=8.8