Unit 1 Test IB Math 2 of 5
POSSIBLE POINTS: 20
(Maximum mark: 6]
25
A cuboid has the following dimensions: length = 9.6 cm, width = 7.4 cm, and height = 5.2 cm.
(a) Calculate the exact value of the volume of the cuboid, in cm?
[2]
(b) Write your answer to part (a) correct to
(i)
two decimal places;
(ii)
three significant figures.
[2]
(c) Write your answer to part (b) (ii) in the form a < 10%, where 1 Sa<10 and k e z.
2
BI SE

Aswimming pool has an input pump for filling the pool and an output pump for emptying the pool. the input pump can fill the pool in 3 hours, and the output pump can drain the pool in 5 hours. as you go to bed, the pool is full, but a neighbor’s kid turns on the output pump. at midnight, you awake to find the pool half empty. immediately, you turn on the input pump, but you are sleepy and forget to turn off the output pump. at what time will the pool become full?

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers