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# Help Zone

## Discussion List

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Secondary II • 2yr.

Good evening everyone !!

I have an exercise in my notebook where I have to subtract two algebraic expressions. I don't remember how. Can you help me? This is what I have to do:

(5x4 + 3x3−4x2 + 7) - (4x5 + 9x3 + 22x2−19x)

Thank you very much!

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Secondary II • 2yr.

Hi!

The vocabulary of algebraic expressions is confusing!

What does a coefficient, a variable mean?

I believed that a constant was a term...

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Secondary I • 2yr.

How to add these 2 fractions:

$$\frac{2}{5} + \frac{5}{6}$$

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Secondary I • 2yr.

Hello,

I am in secondary 1. The final exams are approaching, so I would like to know if you have a list of the concepts learned during the year so that I can revise please. Thank you!

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Secondary I • 2yr.

Hello, how to convert 3/13 to a percentage? Thank you

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Secondary II • 2yr.

How do you calculate an average? I don't remember...

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Secondary II • 2yr.

Hello, how do I find the total area of ​​a cylinder ??? I am only given the radius of the circle (5cm) and the height (10 cm)

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Secondary III • 2yr.

Hello!

I have two lines

1) y = 5x-33

2) 15-2y = x

How do I find the point where they intersect?

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Secondary III • 2yr.

Hi!

I am not able to find the equation of the line which goes through the following points: (-4.7) and (22.4)

Can you help me?

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Hello,

I don't understand if a solid is a prism or vice versa

thank

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Secondary II • 2yr.

Hello, how to multiply algebraic expressions?

I have these two monomials.

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Secondary I • 2yr.

Hello everyone,

I have a hard time remembering words in mathematics. So what does : ‘equation’ mean?

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Hello, I have difficulty with addition and subtraction, I get mixed up with numbers and I can't quite understand. Can you help me please, do you have any tips?

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Hello, I would like to practice my addition and subtraction to improve myself but I do not know how to do it. Do you have any ideas please thank you.

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Secondary I • 2yr.

Hello I have difficulty solving problems, especially understanding what to do. Can you help me?

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Hello, I have difficulty with the units in cm, dm and m. Do you have any tips for not mixing them up please

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Hello, I have difficulty passing the measure exercises in class. Sometimes we have measure time (we have to say about how long some activities take) and sometimes we have to measure objects. I would like to have some tips to improve myself please !!

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Hi ! In school I have to compare solids but I don’t understand how to compare them with faces and apex.  Thanks for your help.

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Hello, we are working on the comparison of figures at the moment but I am having difficulty understanding how to do this properly. Can you help me please?

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Hello, I have difficulty distinguishing between diamonds and squares. I need to know all of the following shapes: square, diamond, rectangle, circle and triangle. It's difficult ... Thank you !!

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Hello, I do not understand what the equality between two numbers is. Can you explain this to me please? Thank you.

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Hello, I don't understand this math problem. My teacher says 5 = 1 + 4, but they are not the same numbers ... Can you help me please?

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Hello,

I am having difficulty counting numbers. I have to do this in several ways, but I don't understand how.

One last question, how do I write the numbers? I find it difficult. Thanks a lot!!

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Hello, I would like to improve my counting because this is what we are seeing right now, but my teacher has no exercises for me. Do you have any ideas for how I can practice myself please? Thank you!!

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Secondary III • 2yr.

Here I am again!

I hope I'm not annoying you, but I like your explanations, so I'll take the liberty of coming back to ask questions.

I would like to know how to divide this algebraic expression by the monomial?

32x2y4z + 46xy32x

Do you have other numbers to suggest to me as well?

Thank you.

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Secondary III • 2yr.

Hello, what are the properties of the rhombus?

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Secondary III • 2yr.

What are the writing rules and standards to follow when dimensioning an object in a technical drawing?

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Secondary IV • 2yr.

Hello,

I am having difficulty finding the equation of an exponential function. Could you help me please?

(Maths CST4)

Thank you very much!

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Secondary III • 2yr.

Hello, I have the volume of a cylinder: 250m ^ 3 with a radius of 1m. How can I find the height?

Thank you!

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Secondary III • 2yr.

Hello! Sorry to bother you again, but I still don't understand this problem.

I have to do the comparison method with these two equations:

1 → 3x - y = 18

2 ⇾ -2y = -6x - 120

And when I isolated y, it gave me:

1 → y = 3x + 60

2 → y = 3x - 18

But it doesn't work !!! I came to an unrealistic answer. Can you help me isolate my equations, because I think I made a mistake please. It would help me enormously! Thanks in advance!