MATHS#27 ~ CXC CSEC MATHEMATICS MAY/JUNE 2019 PAPER 1
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- čas přidán 1. 03. 2022
- CXC CSEC Mathematics ~ 15 May 2019 Paper 1 ~ Q&A Timestamps:
01 ~ sum of squares of negative numbers ~ Q & A 0:15
02 ~ mixed fraction addition ~ Q & A 0:30
03 ~ division with decimals ~ Q & A 0:45
04 ~ x percent is y ~ Q & A 1:00
05 ~ percent marks scored ~ Q & A 1:15
06 ~ square root estimation ~ Q & A 1:30
07 ~ finite set of numbers defined ~ Q & A 1:45
08 ~ number of subsets, the power set ~ Q & A 2:00
09 ~ Venn diagram ~ Q & A 2:15
10 ~ given three sets which pair of intersections is empty ~ Q & A 2:30
11 ~ intersection of three sets ~ Q & A 2:45
12 ~ Venn diagram, shaded region ~ Q & A 2:55
13 ~ currency conversion ~ Q & A 3:10
14 ~ simple interest ~ Q & A 3:25
15 ~ discount price on a dress ~ Q & A 3:40
16 ~ tax on land ~ Q & A 3:55
17 ~ depreciation on car's value ~ Q & A 4:10
18 ~ interest on loan ~ Q & A 4:25
19 ~ tax and dinner bill total ~ Q & A 4:40
20 ~ original cost on 2 books on sale ~ Q & A 4:55
21 ~ sum of fractions with unlike denominators ~ Q & A 5:10
22 ~ write a math statement with given information ~ Q & A 5:25
23 ~ two variable ratio ~ Q & A 5:40
24 ~ inequality ~ Q & A 5:55
25 ~ sum and difference of two positive numbers ~ Q & A 6:10
26 ~ multiplication with bases, coefficients, exponents ~ Q & A 6:20
27 ~ conformable matrices ~ Q & A 6:35
28 ~ determinant of identity matrix ~ Q & A 6:50
29 ~ column vector subtraction ~ Q & A 7:05
30 ~ vectors with a rectangular diagram ~ Q & A 7:20
31 ~ units conversion with millimeters ~ Q & A 7:35
32 ~ sector of a circle ~ Q & A 7:50
33 ~ volume of a cube ~ Q & A 8:05
34 ~ perimeter of a square ~ Q & A 8:20
35 ~ area of a trapezium ~ Q & A 8:35
36 ~ area of a rectangle ~ Q & A 8:50
37 ~ circumference and arc length ~ Q & A 9:05
38 ~ area of a triangle ~ Q & A 9:20
39 ~ histogram and modal age ~ Q & A 9:35
40 ~ cumulative frequency curve and median mark ~ Q & A 9:50
41 ~ cf and iqr, interquartile range ~ Q & A 10:05
42 ~ cumulative frequency curve and passing mark ~ Q & A 10:20
43 ~ range ~ Q & A 10:35
44 ~ probability ~ Q & A 10:50
45 ~ graph of a function ~ Q & A 11:05
46 ~ f(x) value at a fixed point ~ Q & A 11:20
47 ~ straight line cuts an axis ~ Q & A 11:35
48 ~ equation of straight line given a point and the gradient ~ Q & A 11:50
49 ~ range, domain ~ Q & A 12:05
50 ~ where a parabola intersects y = 0 ~ Q & A 12:20 ~ See note in comments
51 ~ coordinates of turning point of a parabola ~ Q & A 12:30 ~ See note in comments
52 ~ perpendicular lines ~ Q & A 12:45
53 ~ transformation ~ Q & A 13:00
54 ~ isosceles triangle angles ~ Q & A 13:15
55 ~ transversal and two parallel lines ~ Q & A 13:30
56 ~ similar triangles ~ Q & A 13:45
57 ~ translation vector ~ Q & A 14:00
58 ~ enlargement ~ Q & A 14:15
59 ~ plane and bearing ~ Q & A 14:30
60 ~ trigonometry and angle of depression ~ Q & A 14:45
My CSEC Maths January Playlist:
• CXC CSEC Mathematics J...
My CSEC Maths May/June, One July Playlist:
• CXC CSEC Mathematics M...
All CSEC Maths Vids ~ Highest Revised Versions ~ Listed Chronologically:
• CSEC Mathematics Paper1s
01-C 11-A 21-D 31-B 41-A 51-D
02-B 12-A 22-A 32-A 42-B 52-C
03-D 13-C 23-D 33-C 43-C 53-D
04-B 14-D 24-A 34-D 44-C 54-C
05-B 15-C 25-A 35-D 45-A 55-B
06-A 16-B 26-B 36-C 46-C 56-C
07-D 17-B 27-B 37-C 47-D 57-A
08-D 18-D 28-A 38-A 48-C 58-C
09-A 19-B 29-D 39-C 49-D 59-B
10-B 20-D 30-A 40-B 50-A 60-A
Maths ~ May/June 2019 ~ Multiple Choice Answers
Some Paper 2 Solutions for this exam (Still working on it)
czcams.com/play/PLjCZPg9qLWrLACRzGT_VTmw0iGVEYmNpi.html
thank u sm for ur videos, aiming for full marks in cxc math p1 tmrw!
You're welcome very much!!
It's almost go time!! You got this!!!!!
God bless you whom ever you are for making these mcq just the way i wanted to study them, much love to you :)
I experience the realities of divine light, grace and infinite blessings!!
As do you as well, in as many ways they manifest~
Thank you for your presence on the channel!
All the best today!! I hope your exam goes well!
Note: Small typo on numbers 50 and 51
The equation in the questions should say y = 4x - x^2
thx
Thank you so much sir keep up the good work
you're welcome very much! ~ I will keep it up and revise all the paper 1s with any mistakes on them in the coming weeks ~ I'm already doing as many Paper 2 problems that I can find in preparation for the January 2024 exam ~ that should be very helpful to anyone trying to score easy marks where possible for Paper 2s
41 is B, because my teacher say to find interquartile range you must find it on the cumulative frequency which is the y axis, so a quarter of 200 is 50 so i go on the y axis and look for 50, and when i go across to the curve it is at 30 marks
wait a minute
isn't the interquartile range defined as a difference? of q1 from q3
which 2 numbers are you subtracting
you have to get 2 numbers from the chart and subtract them
So the answer is 12.5?
@@vidurpersaud5516 I can only eyeball-estimate from the copy of this paper what it could be
But you understand you have to do 75% of 200 and 25% of 200
Check the graph like you said
And then subtract those two numbers you read off the chart
IQR = Q3 minus Q1 values
It will be unmistakable which numbers to subtract on the exam paper
For number 29.... shouldnt you subtract the vectors? why did you put an addition sign when the question asked to subtract?
nice attention to detail~
all steps are legit mathematical operations
by properties of linearity
a - b is the same as a + (-b)
a - 2b is the same as a + ( (-2)(b) )
if you'd like further clarification let me know~
Someone asked this exact same question before
But it looks like they deleted their comment after I explained it
Irregardless of what I did, even if you didn't do it the same way
We should've arrived at the same answer, yes?
I'll add this particular question, with more details, to my hand-picked Paper 1s playlist
czcams.com/play/PLjCZPg9qLWrJHsUWHTE2ShCDQ77rvY6J1.html
(maybe in June 2024 I'll add it, atm trying to finish up all the Paper 2 solutions for the May 2024 exam)
At least 4 times this particular question was pointed out~
But notice, there are a variety ways to re-write terms
-2q = 0 - 2q = 0 + (-2q)
p - 2q = -2q + p = (-2)(q) + p etc
But they are all equivalent, so no matter which we do
We should get the same answer
So if Q is the point (-1, 4)
-Q is the point (1, -4)
and -2Q is the point (2, -8)
let -2Q be X
then P - 2Q = P + X
So with P = (3, 2)
the point P + X
has coordinates
( (3 + 2), (2 - 8) )
= (5, -6)
@@csec-maths-chem-paper1s
Okay, thank you
Worked out this question two other ways
Check that out here if you still need to:
czcams.com/video/vGYcFfsEktg/video.html
@@Moon_Dust1500 Compare this question with
January 2024 Paper 1 Number 27
czcams.com/video/s9lFlmSHCGI/video.html
I don’t get 41…
the interquartile range is the difference between
the third quartile value and the first quartile value
so the value at 75% of 200, which is 150 [on the cf-axis]
and 25% of 200, which is 50 [on the cf-axis]
find 150 on the cf-axis and draw a line to curve and come down to the mark-axis, you'll get a value, lets call it A
find 50 on the cf-axis, draw a line to the curve and come down to the mark-axis, you'll get another value, call it B
A - B is the answer
I estimated what it might be without reading the graph
thank you so much !!😊 ❤️
is 50 and 51 correct?? cuz I'm getting d and b
the answers are correct
the turning point is the vertex (2, 4)
the parabola intersects the x-axis at points x = 0 and x = 4
50 is A, 51 is D
there are two points with y-coordinate of 0
which correspond to the points where the parabola intersects the x-axis
at the origin is one, so thats (0, 0)
and at x = 4, and that's at (4, 0)
so x = 0 and x = 4
you can write the parabola in ax^2 + bx + c form
and note a, b, c
and use the vertex formula to find the turning point
or you can evaluate the equation for the parabola
at x = 2
y = 4x - x^2 = (4)(2) - (2)(2) = 8 - 4 = 4
so we got (x, y) = (2, 4)
this question repeats a lot with the choices swapped around
so make sure you're not memorizing answers a b c d etc
instead memorize the x = 0 and x = 4 and the turning point is (2, 4)
I don't understand 36😢
ok try writing this out~
the area of a rectangle is A
A = length x width
the length is multiplied by 4
old length = L, new length = 4L
the width is halved [that is divided by 2]
old width = W, new width = W/2
New Area = new length times new width
= 4L times W / 2 = (4 over 2) times LW
= 2LW
L is the old length
W is the old width
we're given A = LW = 53.6 cm-squared
so new area = 2(53.6) = 107.2 cm-squared
Wowww thank you sm!!!@@csec-maths-chem-paper1s
@@vilasaramrattan247 you're welcome so much~
they pretty much just said here's the area
and now tell us what's two times the area with all that lol
shouldn't 59 be D as it said clockwise and not anticlockwise?
Sorry I just noticed your comment
I will get back to you shortly!
I was under the impression the difference in angles would suffice to describe the turn ~ But I'm thinking about it now, hmmmm
BTW, good luck today!! it's almost go time!!!!
@@csec-maths-chem-paper1s Thank you, I can confidently say that I'm passing with a one in Maths
@@idrathernot5093 Nice!!! I'm hearing that from plenty people~
Good work going in so ready!! Success favors the well-prepared~
@@idrathernot5093 Funny seeing this problem on the exam, after you just asked about it!
That happened on a few questions literally the night of and hours before the exam~
If you want to check any answers for the June 2023 Paper 1, I just posted the video for it
czcams.com/video/tedOfEp-qck/video.html