Statistics & Probability
A taxi can arrive right on schedule, earlier than scheduled or later than scheduled. The probability the train arrives early is 15% and the probability it arrives late is 15%. The probability that it is on schedule is ….
30%
Look at the picture!
Find the volume of this triangular prism!
105 cm^2
Total payment of a pizza delivery are given in the equation y = 2x + 10. Where x is how many pizza being delivered, and y is total payment. If you order 10 pizza, then how many should you pay?
30 dollars
Look at the picture!
Find out the length of the missing side!
10 cm
A spinner has equally likely colors: white, red, blue, yellow. The spinner is spun twice. The probability of getting red on at least one spin is ….
7/16
Look at the picture!
The transformation happen in this shape B to B' is (in detail)
Translation (3, 2)
Work out the nth term of this sequence
2,5,8,11,...
3n-1
Look at the graph!
Find the gradient of the graph!
m = 1/2
Look at the picture!
What is the mean of location B?
6.583
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Find the bearing to J from N!
Around 140 degree (5 degree below or above is still acceptable)
Expand and simplify:
6(2x - 4) – 3x(4x + 2)
-12 x2 +6x - 24 or 6(2x2 - x + 4)
Here is a function: y = 8 + 4x
Draw the graph!
Picture attached
Look at the picture!
Find the class intervals where the median lies!
290 ⩽ h < 310
If I enlarge shape A with scale factor 2, and the center of enlargement is (2,6). What is the coordinate of x' after the transformation?
(6,4)
Solve this inequality
5 < x + 6 ⩽10
-1 < x ⩽ 4
Picture attached!
Describe the transformation in detail!
Rotation 180 degree, with the center of rotation (4,2)