1
It is 3:10 pm. 123 minutes have passed. What time is it now?
5:13 pm
1+2+3+4/2=
8
A number less than zero is:
negative
12 km = ? m
12,000 m
Express 47% as a fraction.
47/100
60% of a salt water solution is water. How much salt is in that solution, as a fraction?
2/5
In Python, "//" means floor division, which means leaving the quotient with no remainder. What is 38//5?
7
√36 =
6
(-n)2 =
n2
How many prime numbers are there between 1 and 40?
15
Solve for x: 3-2x(4-5) = 9
x=3
Find the mean, median, mode, and range of the set {1,6,2,7,2,3}.
Mean = 3.5, Median = 2.5, Mode = 2, Range = 6
The product of 49 ones is:
1
A sugar water solution has a sugar to water ratio of 2:5. If the whole solution weighs 21 grams, how much sugar is present?
6 grams
Express in exponent form: 24 x 44 x 54. No need to simplify into prime factors.
404
Two positive integers, a and b, are given. Will a% of b always be equal to b% of a? Explain with an algebraic solution.
Yes. a% of b can be written as a(1/100)b. b% of a can be written as b(1/100)a. They are the same thing.
What is so special about the mean and median of a set with an odd number of consecutive integers? Explain with a solution.
They are the same.
Consider the function y=x2. Will the graph of the function ever drop below the x-axis? Explain why.
x2 will always be positive when x is not zero. Therefore, it will never drop below the x-axis.
When will a quadratic equation have one root?
When the discriminant is zero or if it is a perfect square
Express 9! as a product of prime factors. Simplify.
27 x 34 x 5 x 7
sin x cos x tan x csc x sec x cot x = ?
1
Factor completely: x4 - 1
(x+1)(x-1)(x2+1)
log2(log3(log4(64)))=
0
(UNIVERSITY LEVEL QUESTION) If x2+4=0, find the value of x.
2i or -2i
Will sin x ever equal 2? Explain with an algebraic or a graphical solution.
No. The sin graph fluctuates between a maximum value of 1 and a minimum value of -1.