The perimeter of a sector with radius 10 and central angle 60° is:
Anonymous Quiz
43%
10 + (10π/3)
43%
20 + (10π/3)
14%
10 + (5π/3)
0%
20 + (5π/3)
What is the area of a regular pentagon with side length 2? (approx)
Anonymous Quiz
50%
6.88
13%
5.88
25%
7.88
13%
8.88
The number e is defined as the limit of (1 + 1/n)^n as n approaches:
Anonymous Quiz
33%
0
33%
1
33%
infinity
0%
e
Which of the following is a property of irrational numbers?
Anonymous Quiz
30%
They are countable
40%
They have terminating decimal expansions
10%
They are dense in reals
20%
They are all algebraic
What is √2 + √3 approximated to three decimal places?
Anonymous Quiz
50%
3.146
21%
3.162
21%
3.236
7%
3.414
The golden ratio φ appears in the ratio of consecutive terms of which sequence?
Anonymous Quiz
36%
Arithmetic
36%
Geometric
18%
Fibonacci
9%
Harmonic
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