exponents
Does this expression show a monomial?
10
Yes; this is a constant, so it's a monomial.
Solve for x 4x = 8
x = 2
Is this a perfect square trinomial?
4y2 +12y + 9
Yes, this is a perfect square trinomial.
Substitute -1 in for y and solve for x
3x + 7y = -1
x = 2
Express this number in scientific notation.
201,000,000
2.01 x 108
Express this number in standard form
6.32 x 109
6,320,000,000
Solve for x -3x = -9
x = 3
Is this a perfect square trinomial?
9x2 - 6x + 4
No, this is not a perfect square trinomial.
Substitute x for 2 and y for -1 then solve for x
-3x + 5y = 11
-1 = -1
Express this number in scientific notation.
0.000051
2.01 x 10-5
Write a recursive formula for this sequence.
17, 13, 9, 5 ...
The first term a1 is 17, and n is greater or equal to 2.
Solve for x -6x = 18
x = -3
What is the GCF of this equation?
5x2 -80
The GCF is 5
Subtract the equations
5r + 2t = 6
-
9r + 2t = 22
r = 4
6.32 x 109
6,320,000,000
Simplify (5x2y3)(2x4y)
10x6y4
Solve for r 39 = -3r
r = -13
Solve for x
9x2 -48x = -64
x = 8/3
Eliminate x
12x + 6y = 24
+
-12x -12y = -36
y = 2
Express this number in standard form
4 x 10-7
0.0000004
The prize for a radio station contest begins with a $100 gift card. Once a day, a name is announced. The person has 15 minutes to call or the prize increases by 2.5% for the next day.
Write an equation to represent the amount of a gift card in dollars after t days with no winners.
y = 100(1.025)t
Solve for k 3/5k = 6
k = 10
Solve this equation and find the roots.
(y - 6)2 = 81
The roots are 15 and 3
Use the elimination to solve the system of equations.
5x + 6y = -8
2x + 3y = -5
(2, -3)
Express the result in both scientific notation and standard form
(3.5 x 10-3)(7 x 105)
2.45 x 103 or 2450