Exponents
Simplify.
x3x2
x5
What is the probability of flipping heads on a coin?
1/2
Simplify.
7c - 8 - 12c + 4c2
4c2 - 5c - 8
2x + 3 = 3x + 2
x = 1
What property is shown?
6 + (-9) = (-9) + 6
Commutative Property
Simplify.
(2x4)(6x7)
12x11
The weather report says there is a 70% chance of rain tomorrow. What is the chance that it won't rain?
30%
Write an equation to model this sentence.
Five less than six times a number is negative 7.
6n - 5 = -7
6x + 10 = -6x + 6
x = 1/2
Solve the equation for h.
A=1/2bh
h = 2A/b
Rewrite using positive exponents.
4x-2y-3z5
4z5 / x2y3
What is the probability of rolling a number greater than 2 on a regular 6-sided die?
2/3
The number of boys in the class, b, is 4 more than half the number of girls, g. Write an expression to represent the number of boys in the class in terms of the number of girls, g.
b = (1/2)g +4
7y + 2y + 3 = 10y - 2y + 5
y = 2
If A = {6,8,10,12} and B = {5, 6, 7, 8, 9, 10}, find A U B.
{5, 6, 7, 8, 9, 10, 12}
Simplify.
(4a3bc6)3
64a9b3c18
A jar contains 4 purple skittles, 3 orange skittles, and 8 yellow skittles. Shelby draws a skittle out and then replaces it before drawing a second skittle. What is the probability that Shelby draws a purple skittle and then an orange skittle?
4/75
Write an equation to model this problem.
Sully paid $62 for 8 movie tickets for his friends. What was the unit rate, r, for each ticket?
8r = 62
3 + 5n = 1 + 8n + 2
no solution
If m = -4.2 and p = -2.4, what is |p| - m?
6.6
Simplify.
(24m4n5p) / (3m6n2)
(8n3p) / m2
A cookie jar contains 6 oreos, 7 chocolate chip, and 7 peanut butter cookies. What is the probability of choosing an oreo, and then choosing a peanut butter cookie. You eat each cookie that you choose.
21/190
Solve for the variable b in this equation.
6a (b + c) = d
b = (d-6ac)/6a
OR
b = d/6a - c
6(x - 3) - 12 = -2 (x + 10)
x = 5/4
The sum of two consecutive integers is 57. What is the larger number?
29