Inequalities
n+5≥12
What is the probability of rolling a 3 on a standard die?
1/6
How do you calculate the range?
How do you know if terms are "like"
They have the same variable raised to the same power.
ex. 4m and 6m are like terms
4m2 and 6m are not like terms
What is the product of different signed integers?
Negative
Solve for x:
2x+3≤11
x ≤ 4
What is a "sample space"?
A list or tree diagram of all possible outcomes of an event.
Find the median of the numbers 3, 5, 8, 7, 10, 16, 9 and 12.
8.5
Simplify the following:
2m - 5 + 8m - 3
10m - 8
What is the rule when adding different signs?
Find the difference and keep the sign of the higher absolute value.
Explain the difference in graphing x≤2 and x<2
The 2 is included as part of the solution for the inequality x≤2. The number 2 is not part of the solution for x < 2, 2 is not less than 2.
What is the probability of picking a vowel from the word MATHEMATICS ?
4/11
Compare the mean and median of the set: 1, 3, 3, 3, 5
Mean and median are equal, they are both 3.
Simplify:
2(2k + 8)
4k + 16
What integer when added to -20 will be zero.
20
Solve for p:
-2p + 5 < 15
p > -5
If a bag has 5 red marbles, 3 blue and 2 yellow, find the probability of choosing a red and then a blue without replacing the first marble.
Find the mean for the following data:
8, 10, 4, 12, 60, 15, 4, 7
15
Simplify:
4p + 12 + 8k - 2p + 7k - 3
2p + 15k + 9
Solve:
(-4) + 8 x (-2) - 6
-26
Solve for m:
2m + 3 < m - 5
m < -8
Calculate the probability of rolling a sum of 7 with two dice.
6/36 = 1/6
What is the interquartile range for the given data:
11, 12, 8, 6, 5, 4, 3, 10, 6
6
Simplify:
3(x - 4) + 2( 3x - 6)
3x - 12 + 6x - 12
9x -24
Solve:
(-3 + 5) - (3 + 6 x (-2)) + 3 x (-2)
11+ (-6)
5