The table shows the scores of competitors in a competition.
Score 10 20 30 40 50
Number of competitors with this score 1 2 5 k 3
The mean score is 34. Find the value of k.

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Find the exact value of x satisfying the equation
(3x)(42x+1) = 6x+2.
Give your answer in the form where a, b .

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From January to September, the mean number of car accidents per month was 630. From October to December, the mean was 810 accidents per month.
What was the mean number of car accidents per month for the whole year?

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Consider the function h (x) = x .
(i) Find the equation of the tangent to the graph of h at the point where x = a, (a 0). Write the equation in the form y = mx + c.
(ii) Show that this tangent intersects the xaxis at the point (–4a, 0).
(Total 5 marks)

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The company charges 55 cents per kilometre for distance travelled. There are no other charges. Use the curve to answer the following. (b) On that morning , 40% of the cabs travel less than a km. Find the value of a. (4) (c) What percentage of the cabs travel more than 90 km on that morning? 
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IB DP Math SL type 2 IA portfolio task Population trends in China, Gforce tolerance
IB DP Math HL type 2 IA portfolio task Modelling functional Building, Running with Angie and Buddy
IB DP Math HL type 1 IA portfolio task Patterns within system of linear equations, How many pieces.
IB DP Math SL type 1 IA portfolio task Infinite Summation, Stellar Numbers,
IB DP Math SL type 2 IA portfolio task Fish production, Gold Medal heights
IB DP Math HL type 2 IA Portfolio task the dice game, filling up the petrol tank.
IB DP Math HL type 1 IA portfolio task shadow function, Patterns from complex number.
IB DP Math SL type 1 IA portfolio task Lacsap’s fraction, Circles
IB DP Math SL type 2 IA portfolio task Population trends in China
IB DP Math HL type 2 IA portfolio task Modelling functional Building
IB DP Math HL type 1 IA portfolio task Patterns within system of linear equations
IB DP Math SL type 1 IA portfolio task Infinite Summation
B DP Math SL type 2 IA portfolio task Fish production
IB DP Math HL type 2 IA Portfolio task the dice game
IB DP Math HL type 1 IA portfolio task shadow function
IB DP Math SL type 1 IA portfolio task Lacsap’s fraction 
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Please solve all questions of Modelling the functional building portfolio. 
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please solve this maths portfolio. 
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Please solve this portfolio. 
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i want solution for this portfolio. 
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please solve this portfolio for me. 
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IB DP Math SL type 2 IA portfolio task Population trends in China, Gforce tolerance IB DP Math HL type 2 IA portfolio task Modelling functional Building, Running with Angie and Buddy IB DP Math HL type 1 IA portfolio task Patterns within system of linear equations, How many pieces. IB DP Math SL type 1 IA portfolio task Infinite Summation, Stellar Numbers, IB DP Math SL type 2 IA portfolio task Fish production, Gold Medal heights IB DP Math HL type 2 IA Portfolio task the dice game, f 
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Please convert 30 degree to radian. 
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Cardano (Italian mathematician in the 16^{th} century) came up with the following problem:
The sum of two numbers is 10 and the product is 40, what are the two numbers? 
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i need help with matlab urgent 
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If 2x2 – 3y2 = 2, find the two values of dy/dx when x = 5. 
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Is there any way I can find out how the my IB Math HL Type 1 Internal Assessment should be structured? My teacher gave us the criteria, but did not explain how it was to be structured. 
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please tell me integration of tan3x 
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