MATHS#14 ~ CXC CSEC MATHEMATICS MAY/JUNE 2012 Paper 1

CXC CSEC Mathematics 18 May 2012 Paper 1 ~ Q & A Timestamps:
01 ~ pi written to 3 decimal places ~ Q & A 0:15
02 ~ decimal number as fraction in lowest terms ~ Q & A 0:30
03 ~ scientific notation ~ Q & A 0:45
04 ~ percent of students wearing glasses ~ Q & A 1:00
05 ~ parts to whole, triple ratio ~ Q & A 1:15
06 ~ percent of a number ~ Q & A 1:30
07 ~ common multiples of 3 numbers ~ Q & A 1:45
08 ~ 301 written in base 10 ~ Q & A 2:00
09 ~ value of a digit in a 3 digit number ~ Q & A 2:15
10 ~ distributive law ~ Q & A 2:30
11 ~ finite set ~ Q & A 2:45
12 ~ number of elements in union formula for sets ~ Q & A 2:55
13 ~ 3 sets which pair have empty intersection ~ Q & A 3:10
14 ~ Venn diagram and the union formula for sets ~ Q & A 3:25
15 ~ discount price on a dress ~ Q & A 3:40
16 ~ taxable income ~ Q & A 3:55
17 ~ currency conversion ~ Q & A 4:10
18 ~ simple interest ~ Q & A 4:25
19 ~ sales tax and final cost ~ Q & A 4:40
20 ~ gain percentage ~ Q & A 4:55
21 ~ commission earned in a month ~ Q & A 5:10
22 ~ profit on a loan as a percent ~ Q & A 5:25
23 ~ abstract algebra, r star s rule ~ Q & A 5:40
24 ~ addition with fractions having like denominators ~ Q & A 5:55
25 ~ multiplication of monomials by coefficients and addition ~ Q & A 6:10
26 ~ rational expression with 3 unknowns, plug in numbers ~ Q & A 6:20
27 ~ bases, coefficients, exponents, multiplication ~ Q & A 6:35
28 ~ inequality ~ Q & A 6:50
29 ~ solve for x ~ Q & A 7:05
30 ~ sides of a rectangle ~ Q & A 7:20
31 ~ solve for x ~ Q & A 7:35
32 ~ sector of a circle ~ Q & A 7:50
33 ~ volume of a cube ~ Q & A 8:05
34 ~ units conversion, millimeters ~ Q & A 8:20
35 ~ average speed ~ Q & A 8:35
36 ~ flight time ~ Q & A 8:50
37 ~ liters and milliliters calculation ~ Q & A 9:05
38 ~ area of a trapezium ~ Q & A 9:20
39 ~ volume of a cylinder ~ Q & A 9:35
40 ~ area of triangle and perpendicular height ~ Q & A 9:50
41 ~ range of heights, highest minus lowest ~ Q & A 10:05
42 ~ marbles in a bag and probability ~ Q & A 10:20
43 ~ bar chart query ~ Q & A 10:35
44 ~ mean of four numbers ~ Q & A 10:50
45 ~ pie chart and drinks ~ Q & A 11:05
46 ~ maximum point and parabola ~ Q & A 11:20
47 ~ straight line touches axis at a point ~ Q & A 11:35
48 ~ relation and set of ordered pairs ~ Q & A 11:50
49 ~ line graph and inequality ~ Q & A 12:05
50 ~ h(x) at x =-6 ~ Q & A 12:20
51 ~ which choice represents the arrow diagram ~ Q & A 12:30
52 ~ bearing ~ Q & A 12:45
53 ~ sum of interior angles in a polygon ~ Q & A 13:00
54 ~ construction and a circle and equilateral triangle formed ~ Q & A 13:15
55 ~ image of a line segment and type of transformation ~ Q & A 13:30
56 ~ triangle and angles ~ Q & A 13:45
57 ~ image of a point under a translation ~ Q & A 14:00
58 ~ ladder, floor, wall triangle formed ~ Q & A 14:15
59 ~ triangle and angles~ Q & A 14:30
60 ~ height of building and trigonometry ~ Q & A 14:45

My CSEC Maths January Playlist:

My CSEC Maths May/June, One July Playlist:

All CSEC Maths Vids ~ Highest Revised Versions ~ Listed Chronologically:

[csec-maths-chem-papers]

01-B 11-D 21-C 31-A 41-B 51-C
02-D 12-B 22-D 32-C 42-D 52-B
03-B 13-B 23-A 33-D 43-B 53-D
04-A 14-A 24-D 34-B 44-D 54-C
05-C 15-C 25-C 35-C 45-B 55-B
06-C 16-B 26-B 36-A 46-B 56-C
07-A 17-C 27-A 37-C 47-D 57-D
08-A 18-D 28-D 38-B 48-A 58-A
09-C 19-C 29-D 39-C 49-D 59-D
10-D 20-A 30-A 40-A 50-A 60-D
Maths ~ May/June 2012 ~ Multiple Choice Answers

[csec-maths-chem-papers]

Note: 31 is NOT D, why are people saying that?
3 + two-fifths does not equal 1
So it can't be choice D~
Substitute all the answers in the equation
Only one choice works ~ Choice A
3 + (-2) = 1

You can't just proclaim something is the answer and offer no proof!
Or maybe you can, hehehehehehe~

[csec-maths-chem-papers]

Someone asked what's the answer to 21
The salesman's commission question:
5% of his sales is the commission
His sales is $2020
5% of $2020 = 0.05 x $2020 = $101
Choice C