Sets
U = { 1, 2, 3, 4, 5, 6, 7}
A= {2, 3, 5}
Find A'
What is {1, 4, 6, 7}?
i236
What is 1?
Solve
x2 + 8x - 48 = 0
What is x = -12 and x = 4?
solve
y = x + 4
3x - 4y = -18
What is (2, 6)?
Name the dimensions of the matrix
3 4 6
2 1 0
2 4 8
-1 9 -4
What is 4 x 3?
A= {2, 4, 6, 8, 10, 12, 14}
B= {2, 6, 8, 9, 11, 12, 13}
Find A U B
What is {2, 4, 6, 8, 9, 10, 11, 12, 13, 14}?
(9 + 3i) + (-12 - i)
What is -3+ 2i?
solve
2x2 - 20 = 0
What is +/- Squareroot of 10?
2x + 8y = 14
2x + 3y = 4
What is (-1, 2)?
3 4 6
2 1 0
2 4 8
-1 9 -4
Find element 31
What is 2?
A= {2, 4, 6, 8, 10, 12, 14}
B= {2, 6, 8, 9, 11, 12, 13}
Find A intersect B
What is {2, 6, 8, 12}?
(-5 + 2i) - (7 - 3i)
What is -12 + 5i
solve
9x2 - 3x = 6
What is x = 1 and x = -2/3?
solve
-8x + 4y = - 52
3x + 6y = -3
What is (5, -3)?
Add
4 5 + -3 6
-1 3 9 -5
What is
1 11
8 -2
A= {2, 4, 6, 8, 10, 12, 14}
B= {2, 4, 6, 8}
True or False A is a subset of B
What is False?
(4 + 7i)(3 - 5i)
What is 47 + i?
Solve
x2 - 8x + 2 = 0
What is 4 +/- squareroot of 14?
You have 28 coins in your pocket worth $2.40. Some are dimes and some are nickels. How many nickles do you have?
What is 8?
-4 7 9 -2 4 -1
11 4 -2 - 1 0 -3
What is
-2 3 10
10 4 1
A= {2, 4, 6, 8, 10, 12, 14}
B= {2, 6, 8, 9, 11, 12, 13}
C= {5, 7}
Find A U B intersect C
What is {}?
8 - 2i/ 3 - 4i
What is 5 + 3i/4
solve
x2 + 5x + 8 = 0
what is -5 +/- i squareroot of 7 over 2?
Three people work at an ad company: Allie, Beth, and Carl. They sold 310 ads all together for a total of $24,300. If the ads Allie sold were $45, Beth's ads were $90, Carls ads were $95., and Carl sold twice as many ads as Beth. How many adds did each person sell?
What is Allie= 40, Beth= 90, and Carl= 180?
What is it called when you multiply a matrix by a constant
Scalar Multiplication