20:00 sir at the start of question 8 they said Marla buys the 2 types of mobile phones, therefore shouldn't it be assumed that y cannot be 0 in part iv, hence the answer should be (8.5, 8.5) which are values that match the x + y criteria for purchasing both phones?
Angle JHK can also be solved by adding 90 degrees (angle HJK)and 50 degrees (angle JKH) and subtracting the result from 180 .As an angle formed in a semicircle is equal to 90 and angles in a triangle sum to 180
Remember that the 20% mentioned above is a percent INCREASE. So since its an increase to the original pay, it will be 100% + 20%. (i already did maths but comming back to it bc of courses lol)
Hello sir, I don't understand some of the parts concerning the calculations, for example: at 11:29, it is as if you already compute the solutions within yourself so when it is to be written down, it becomes a hard time explaining accurately on how you found the answers. I really wish on that part it will be improved, especially since you are the only tutor I could find that finish what they started on the CXC Maths July 2021 Exam worksheet, and I really appreciate that🙏.
For question 3d (iii) The the vector is negative 7 and 1 not negative one arent you suppose to move one Place up on the y axis not down for every point ?
