What is the probability of an event that always happens?
1
100
What is (sine 45 x cosine 270) / tan 0 ?
math error
100
Find f(2) when f(x) = 3x - 1
5
100
A rectangle has an area of 117m^2 and a width of 9m. What is the length of the rectangle?
13m
200
What is x when x^2 + 3x + 2 = 0 ?
-1 or -2
200
A bag contains 4 red balls, 6 green balls, and 12 yellow balls. Joowan takes out a random ball from the bag. What is the probability of Joowan choosing a red or a green ball?
0.4545454545
200
Cosine 70 = 0.342. What is another angle that has a cosine value of 0.342?
290
200
When f(x) is 400x + 400 write f'(x)
(x - 400)/ 400
200
Find the area of a regular pentagon of side 8cm
110cm^2
300
Simplify (x^2 + 3x - 10)/ (x^2 - 4)
(x + 5)/ (x + 2)
300
A coin is tossed and a die is thrown. What is the probability of getting a head on the coin and an odd number on the die?
1/4 or 0.25
300
The cosine rule : b^2 = a^2 + c^2 - (2ac X ???)
what should be in ???
cosine B
300
g(x) = x^3 / 10
Find the value of y when g(y) = 34.3
7
300
A circle has a circumference of 30cm. Find the area of the circle
225 cm^2
400
Find the dy/dx of 3x^2
6x
400
What is the probability of raining two days in a row when the probability of not raining in any day is 0.13?
0.7569
400
When one angle of right angled triangle is 40 and the longest side of the triangle is 6, find the length of the side that is opposite to angle 40.
A car wheel has an outer diamter of 30cm. How many time will the wheel rotate on a journey of 5km?
5035 times
500
What is x when dy/dx of 4x^3 + x^2 - 120x + 12756 = 0 ?
-12 or 10
500
A coin is tossed four times. What is the probability of obtaining at least three heads?
0.3125
500
An isosceles triangle has sides of length 8cm, 8cm, and 5cm. What is the angle between the two equal sides?
36.4
500
f(x) = 2x^2 - 5x +10
g(x) = 13x + 44
h(x) = x!
Find x if h(x) = gf(x)
6
500
Metal spheres of radius 2cm are put into a rectangular box of internal dimensions 16cm X 8cm X 8cm. After putting in 16 spheres, the box is filled with liquid. Find out the volume of this liquid.