HMa9 9c 2016-17

The last lesson, 31.5.2017





Frej på vårbalen



Homework for Wednesday, 19 April 2017. 

Please answer these questions about probability (first half of chapter 10 in the book). 


Homework for Wednesday, 5 April 2017.
Or Friday if there's no math on Wednesday... ;)



Homework for Friday, 24 March 2017

Read page 49 - 51. Look at the examples!


Homework for Wednesday, 22 March 2017

Read page 48 and half of page 49. Have a good look at the examples!



Homework for Wednesday, 15 March 2017


Please let me know this:


  • vilket ämne du skall undersöka och vilka frågor du tänker ställa
  • hurdan enkät du tänker använda (analog/digital)
  • hur du skall få in svar (länk på sociala medier, gå runt i skolan och fråga, …)
  • vem du tänkt fråga (ungdomar, pappor, fotbollsspelare, husdjursägare, …)
  • hur många du tänkt fråga
  • din hypotes om hurdana svar du kommer att få


You can write your answers in this Padlet, or via Wilma.



4.2 Statistik i vardagen
Homework for Monday, 13 March 2017.

Read p. 33 - 34. 


3.2 Population och stickprov
Homework for Wednesday 8, March 2017.

Read "Population och stickprov", page 25-26 in the book.


3 Att samla in data och göra upp tabeller
Homework for Monday 6, March 2017.

NB - Monday after the sportlov!

Read page 24 - (half) 25 in the book.


Pie charts in Microsoft Excel
Homework for Wednesday, 22 February 2017.

Watch the first 2 minutes 10 seconds of this video. DO NOT go to his website and download anything!!!


See you in the computer class on Wednesday!


2.2 Cirkeldiagram
Homework for Monday, 20.2.2017

Prepare yourself to make a pie chart in class! Here is a guide: http://www.wikihow.com/Make-a-Pie-Chart


HMa9 3.6.2 Formelberäkningar
Homework for Monday 6 February, 2017.


And here is your challenge for the week. Please note the link that appears when you're finished!

HMa9 3.6 Proportionalitet i ekvationer
Homework for Friday, 3 February 2017.



HMa9 3.5.2 Rationella uttryck
Homework for Wednesday, February 1 2017



HMa9 3.5 Bråk (och rationella uttryck)
Homework for Monday, 30 January 2017.




HMa9 3.4.3 Faktorisering med hjälp av minnesregler
Homework for Friday, 27 January 2017.


Faktorise these polynomials. Bring your calculations to class. 
Hint: the rules are used in the same order as in the video.

  1. y² - 25
  2. x² - 4x + 4
  3. 4z² + 4z + 1

HMa9 3.4.2 Division av polynom - utbrytning av gemensam faktor
Homework for Wednesday, 25 January 2017


Factor these polynomials. Bring your work to class!

  1. 3x - 12
  2. 12x² + 5x
  3. 18x³ - 10 x² + 4x

HMa9 3.4 Division av polynom
Homework for Monday, 23 January 2017.


Perform the divisions, bring your work to class!


HMa9 3.3.2 Värdet av ett polynom och ett polynomuttryck
Homework for Friday, 20 January 2017


And heeere are the questions! ;-)

HMa9 3.3 Förenkla polynom
Homework for Wednesday, 18 January 2017



HMa9 2.3.2 Kvadrerings- och konjugatregler
Homework for Monday, 16 January 2017.




HMa9 3.2.2 Multiplikation av monom och polynom
Homework for Friday, 13 January, 2017.


Solve these on a piece of paper and bring to class:

  1. 5 · x²

  2. 5x · x²

  3. -2x(2x - 3)

  4. (z-1)(z-2)


HMa9 3.2 Addition och subtraktion av polynom
Homework for Wednesday, 11 January, 2017.


Please answer these questions!


HMa9 3.1.2 Exponenten noll, negativ exponent
Homework for Wednesday, 21 December, 2016.



HMa9 3.1 Potensuttryck
Homework for those of you not taking the test Wednesday, 14 December 2016


Then, calculate these exponents and bring your solutions to class.


HMa8 Test 2

What you are expected to know

How to classify geometric 3D shapes
Formulas for the area of a rectangle, triangle, circle
Convertion between units (p. 166)

Formulas that will be given

Volume of a cylinder: (base area) x hight
Volume of a cone : [(base area) x hight] : 3
Volume of a sphere: [4 x pi x r^2] : 3

Area of the surface area of a cylinder: 2 x (base area) + (area of the side)
Area of the surface of a pyramid: (base area) + (area of the sides)
Area of the surface of a circular cone: (base area) + (side area). Side area: (pi) x r x s, where s = slant hight
Area of the surface of a sphere: 4 x (pi) x r^2

HMa8 1.14 Revision
Homework for Monday, 12 December 2016

Is there anything in particular you want us to take a look at during the lesson? Fill it in here!


HMa8 2.12.2 Arean av ett klot
Homework for Friday, 9 December 2016.


Then, calculate the area of the sphere:



HMa8 2.12 Klot
Homework for Wednesday, 7 December 2016


What is the volume of the sphere?


HMa8 2.11.2 Arean av en cirkulär kons begränsningsyta
Homework for Monday, 5 December 2016


Then, please solve this and bring your solution to class! Never mind the value for π - use the real value given by your calculator.


HMa8 2.11 Cirkulär kon
Homework for Friday, 2 December 2016


Then, solve the problems below. Bring your calculations to class!




HMa8 2.10.2 Arean av en pyramids begränsningsyta
Homework for Thursday, 1 December 2016

(ny, mindre suddig, video!)

Then, solve the problem below. Bring your solution to class!

HMa8 2.10 Kon
Homework for Wednesday, 30 November 2016




HMa8 2.9 En cirkulär cylinders volym
Homework for Thursday, 17 November 2016.





HMa8 2.8.2 Arean av en cylinders begränsningsyta
Homework for Wednesday, 16 November 2016.




HMa8 2.8 En cylinders volym
Homework for Monday, 14 November 2016


And let's try a new tool for homework:


HMa8 2.7.2 Enhetsomvandlingar
Homework for Monday, 7 November 2016. (Please note there's a post about the test below this one!)




HMa8 Test on Thursday


HMa8 2.7 Kroppar
Homework for Thursday, 3 November 2016.


Then, please have a look here! Look carefully for the instructions!

HMa8 2.5.2 Att bestämma delarna i en rätvinklig triangel
Homework for Wednesday, 2 November 2016.



Then, find all sides and the missing angle in this triangel. Bring your solution to class!


HMa8 2.5 Tillämpningar med trigonometriska funktioner
Homework for Monday, 31 October 2016.


Then, solve this on a piece of paper (so you can hand it in) and bring your it to class!

HMa8 2.4.2 Solving for a side in right triangles with trigonometry
Homework for 9c for Thursday, 27 October 2016




HMa8 2.4 Sinus och cosinus
Homework for 9c for Wednesday, 26 October 2016




HMa8 2.3 Tillämpningar med tangens
Homework for 9c for Thursday, 13 October 2016


Watch the video  then solve these problems. (What's d, what's y?).  Bring your calculations to class!



HMa8 2.2.2  En vinkels storlek med hjälp av tangens
Homework for Wednesday, 12 October 2016.




HMa8 2.2 Tangens
Homework for Monday, 10 October 2016.




HMa8 2.1.2 Likformiga rätvinkliga trianglar

Homework for 9c for Thursday. 6 October 2016. Be nice to Mia! ;)


Find x in the two triangles below. Do the calculations on a piece of paper and bring it to the lesson! Remember to write your name on the paper!