What is the area of a regular octagon with side length 1? (approx)
Anonymous Quiz
25%
4.828
44%
4.414
19%
5.828
13%
5.414
Which of these is not a property of e?
Anonymous Quiz
44%
It is the base of natural logarithms
22%
It is the limit of (1+1/n)^n
33%
It is algebraic
0%
It is irrational
The perimeter of a regular polygon can be expressed as:
Anonymous Quiz
56%
Number of sides times side length
11%
Number of sides times apothem
33%
Number of sides times radius
0%
Twice the area divided by apothem
What is the product of the golden ratio φ and its conjugate (1-√5)/2?
Anonymous Quiz
45%
-1
36%
0
9%
1
9%
2
A store offers a 20% discount on a $80 jacket. What is the sale price?
Anonymous Quiz
69%
$64
31%
$60
0%
$72
0%
$68
If a train travels 300 miles in 5 hours, what is its average speed?
Anonymous Quiz
38%
50 mph
62%
60 mph
0%
70 mph
0%
40 mph
In a survey of 100 people, 60 like coffee, 40 like tea, and 20 like both. How many like neither?
Anonymous Quiz
56%
20
6%
30
39%
10
0%
40
A bag contains 5 red, 3 blue, and 2 green marbles. What is the probability of drawing a blue marble?
Anonymous Quiz
36%
0.2
43%
0.3
7%
0.4
14%
0.5
Set A has 8 elements, set B has 12, and their union has 15. How many elements are in the intersection?
Anonymous Quiz
54%
5
38%
4
0%
6
8%
3
A recipe calls for 2 cups of flour for 12 cookies. How many cups for 30 cookies?
Anonymous Quiz
25%
4
50%
5
8%
6
17%
3
In a class of 30 students, 18 play soccer and 12 play basketball. If 5 play both, how many play neither?
Anonymous Quiz
75%
5
25%
6
0%
7
0%
4
If the universal set U has 50 elements, set A has 20, set B has 30, and A∩B has 10, what is |A' ∩ B'|?
Anonymous Quiz
67%
10
33%
20
0%
30
0%
40
A car travels at 60 mph for 2 hours, then at 40 mph for 3 hours. What is the total distance?
Anonymous Quiz
75%
240 miles
25%
260 miles
0%
200 miles
0%
280 miles
In a Venn diagram of two sets, the region outside both sets represents elements in:
Anonymous Quiz
27%
A only
27%
B only
36%
neither
9%
both
A number is increased by 25% then decreased by 20%. The net change is:
Anonymous Quiz
36%
5% increase
21%
no change
36%
5% decrease
7%
10% increase