Real numbers, sets and fractions
From the following set, which are rational numbers? A = {8/2, √2, -3/4, 0, -5, pi/3}
All except √2 and pi/3
What number is this in standard notation? 4.6x10^3
4600
A hotel has food supplies in its storage for 150 guests for 7 days. If 30 more guests arrive, how many days will the supplies last?
5.83 days
Solve the special product: (x+3)(x-3)
x^2 - 9
Who founded Amazon?
Jeff Bezos
Describe what is a Venn diagram.
What number is this in scientific notation? 0.0097
9.7x10^-3
A farm has enough feed to feed 200 cows for 10 days. If 50 more cows are brought to the farm, how many days will the feed last?
8 days
Solve the special product: (x - 5)^2
x^2 - 10x + 25
What is Batman’s secret identity?
Bruce Wayne
From these sets, what is the union? A={-4, -3, -2, -1, 0, 1, 2, 3, 4} B= {0, 2, 4, 6, 8}
A∪B={-4, -3, -2, -1, 0, 1, 2, 3, 4, 6, 8}
If a room has an irregular shape, how do we get the perimeter and the area?
(Descriptions may vary)
Simplify the expression without negative exponents (written on the board by the teacher).
(Written on the board)
Factor completely: 10x^2 - x - 2
(2x−1)(5x+2)
What fictional town does Spongebob Squarepants live in?
Bikini Bottom
A bookstore had 120 copies of a magazine. Yesterday the bookstore sold 2/3 of these copies. How many copies were sold yesterday?
80 copies
What is the result of (1.2x10^-12)(7x10^8)? Express the result in scientific notation.
8.4x10^-4
Carry out the multiplication: (5x^3-2x^2+3x-2)(8x-1)
40x^4 - 21x^3 + 26x^2 - 19x + 2
Factor completely: x^2+4x-xy-4y
(x+4)(x−y)
In what year was YouTube created?
2005
Pablo had 4/5 acres of land. He planted 2/5 of this land with corn. How many acres did he plant with corn?
8/25 acres
A customer bought pants for $900. If there was already a 25% discount, what was the original price?
$1200
Double points! Carry out the synthetic division: (2x^3 -9x^2+13x-6)÷(x-2)
Quotient 2x^2 - 5x + 3 , remainder 0
Double points! Rationalize: 3x / (5 + 2√ x)
(15x - 6x√x) / (25 - 4x)
What was the first major motion picture to be shot on the open ocean?
Jaws