MATHS#35 ~ CXC CSEC MATHEMATICS JANUARY 2023 PAPER 1

CSEC Mathematics January 2023 Paper 1 Timestamps: 01 Q 0:05 ~ value of a digit in a decimal number ~ A 0:11 02 Q 0:20 ~ percentage of a number ~ A 0:29 03 Q 0:36 ~ standard notation ~ A 0:45 04 Q 0:54 ~ ratio, pupils, students ~ A 1:01 05 Q 1:10 ~ apples shared amongst 3 people ~ A 1:18 06 Q 1:26 ~ multiplication with decimal numbers ~ A 1:34 07 Q 1:43 ~ defined set ~ A 1:51 08 Q 1:59 ~ Venn diagram ~ A 2:07 09 Q 2:15 ~ disjoint sets ~ A 2:23 10 Q 2:32 ~ Venn diagram, scrabble & checkers ~ A 2:40 11 Q 2:48 ~ Venn diagram, hockey & volleyball ~ A 2:56 12 Q 3:05 ~ numbers divisible by seven ~ A 3:13 13 Q 3:21 ~ commission ~ A 3:29 ~ "part thereof" question ~ see comments ~ It's D 14 Q 3:37 ~ simple interest ~ A 3:46 15 Q 3:54 ~ currency conversion ~ A 4:02 16 Q 4:11 ~ change after purchase with a $100 ~ A 4:19 17 Q 4:28 ~ fixed charge and gas used ~ A 4:36 18 Q 4:43 ~ appreciation value ~ A 4:52 19 Q 5:00 ~ interest on loan ~ A 5:09 20 Q 5:17 ~ profit as a percentage ~ A 5:25 21 Q 5:33 ~ reciprocals ~ A 5:52 22 Q 5:50 ~ area of a rectangle ~ A 5:57 23 Q 6:05 ~ Althea saves ~ A 6:14 24 Q 6:22 ~ solve for x ~ A 6:30 25 Q 6:39 ~ multiplication with common base ~ A 6:47 26 Q 6:55 ~ abstract algebra, a star b rule ~ A 7:04 27 Q 7:12 ~ matrix with determinant of zero ~ A 7:21 28 Q 7:28 ~ order of a matrix ~ A 7:37 29 Q 7:45 ~ vector addition ~ A 7:53 30 Q 8:02 ~ vector by triangle rule ~ A 8:11 31 Q 8:18 ~ area of a cylinder ~ A 8:26 32 Q 8:34 ~ area of a minor sector and whole circle ~ A 8:43 33 Q 8:51 ~ average speed ~ A 8:59 34 Q 9:07 ~ perimeter of a triangle ~ A 9:16 35 Q 9:25 ~ liters and champagne ~ A 9:32 36 Q 9:41 ~ square, rectangle, perimeter, area ~ A 9:50 37 Q 9:58 ~ circumference, radius ~ A 10:05 38 Q 10:13 ~ map scale ~ A 10:21 39 Q 10:30 ~ mode ~ A 10:38 40 Q 10:46 ~ median ~ A 10:54 41 Q 11:02 ~ pie chart and students, football ~ A 11:11 42 Q 11:19 ~ find amount of fish bought given bar graph ~ A 11:27 43 Q 11:36 ~ interquartile range ~ A 11:43 44 Q 11:52 ~ conditional probability ~ A 12:03 45 Q 12:10 ~ linear function and horizontal axis ~ A 12:17 46 Q 12:25 ~ describe that mapping ~ A 12:33 47 Q 12:41 ~ h(x) at x = -6 ~ A 12:49 48 Q 12:57 ~ maximum point on a parabola ~ A 13:06 49 Q 13:14 ~ points where a parabola intersects x-axis ~ A 13:22 50 Q 13:31 ~ equation of a straight line ~ A 13:39 51 Q 13:47 ~ set that defines a function ~ A 13:55 52 Q 14:04 ~ parallel lines and gradient ~ A 14:13 53 Q 14:21 ~ central angle, inscribed angle ~ A 14:28 54 Q 14:37 ~ alternate interior angles, parallel lines, transversal ~ A 14:45 55 Q 14:54 ~ transformations: mirror reflection and shrinking ~ A 15:03 56 Q 15:10 ~ reflection in x-axis ~ A 15:18 57 Q 15:26 ~ interior angles' sum of a triangle ~ A 15:34 58 Q 15:43 ~ angle of depression ~ A 15:51 59 Q 15:59 ~ which ratio: sine, cosine, tangent ~ A 16:08 60 Q 16:15 ~ translation image ~ A 16:24 Thank you Kyle for pointing out number 13 I'll make corrections in an updated revision of this video!