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Mathematics
Grade 7 · with Papa J
Writing the formula
11 Aug, 11:57
Great, let's start with just one shop so it's not overwhelming. Look at "Dress to Impress" — what does it charge as a flat fee, and how much extra per hour? Once you tell me those two numbers, think about how the total cost depends on the number of hours, and see if you can write that as a formula yourself.
11 Aug, 11:57
I don’t understand what you mean
11 Aug, 11:58
No problem, let's slow down. In your worksheet, does "Dress to Impress" have something like "R___ plus R___ per hour"? Can you read out (or describe) exactly what the pricing details say for that shop?
11 Aug, 11:58
R300 plus R130 pur meter
11 Aug, 12:00
Good, so it's R300 plus R130 for every metre of fabric. Now think of it like this: if you buy 1 metre, the cost is 300 + 130. If you buy 2 metres, it's 300 + 130 + 130. Do you notice how the 130 keeps repeating depending on how many metres you buy? So if we let **m** stand for the number of metres, how could you write that repeated addition as a multiplication? Try writing the full formula for the total cost, **C**, using m.
11 Aug, 12:00
A recipe needs 3/4 cup of flour for 6 muffins. How much flour do I need for 10 muffins?
11 Aug, 14:04
Let's figure out how much flour is needed per muffin first. If 3/4 cup makes 6 muffins, what's 3/4 divided by 6? That'll tell you the flour for just 1 muffin, and then you can scale up to 10.
11 Aug, 14:04
Question 3, the triangle one
11 Aug, 15:30
I can't quite make out the details in that image — it's come through blank/unclear on my end. Can you describe what's given for the triangle (the angles or sides shown, and what the question is asking you to find)?
11 Aug, 15:30
Please can you help me with tis
16 Aug, 12:40
This is a matching exercise with a few different parts (a, b, c, d). Which one are you stuck on first — maybe start with (a), buying a book for the teacher? Think about it: if you buy one book, you pay one price. If a teacher just buys a book (not related to hours or size), does the cost change at all based on some other variable, or does it stay fixed? Look at graphs A, B, C, D — which one shows something that doesn't increase or decrease at all, just stays flat or is a single point situation?
16 Aug, 12:40
It stays fixed. A
16 Aug, 12:42
Good thinking! Now check — does graph A actually show a flat, unchanging line, or does it show something else like a straight line going up? Look carefully at what A actually looks like before you commit to that answer.
16 Aug, 12:42
Ohhh ok
16 Aug, 12:43
Good, take another look and tell me which graph actually matches "stays the same no matter what" — a flat horizontal line. Which letter is that one?
16 Aug, 12:43
i thinks its c
16 Aug, 12:43
Can you describe what graph C actually looks like — is it a flat horizontal line, or does it slope up/down, or is it a single dot? That'll help you confirm if it fits "cost stays fixed no matter what."
16 Aug, 12:43
Can you please help me with this question
26 Aug, 08:42
Now I can see it clearly, thanks! Let's start with part a) since b) and c) depend on it. First, find point A's coordinates on the grid (count squares across and up from some corner point you choose as reference). Then to translate it 5 units right and 2 units down, what do you do to its position — do you add or subtract from the horizontal count, and add or subtract from the vertical count?
26 Aug, 08:42