IGCSE Mathematics Paper-1: Specimen Questions with Answers 149 - 151 of 324

Question 149

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Short Answer▾

The average temperatures in Toronto of Canada for each month are shown in the table below.

Torontos Average Temperature of Each Month
MonthJanFebMarAprMayJuneJulyAugSepOctNovDec
Temp -4.63-4.130.436.2711.9717.2320.620.316.310.14.67-1.53

(a) Which month has the highest average temperature?

(b) Find the difference between the average temperatures in June and December.

Explanation

Here,

(a) Here, as shown in table, June and July has highest temperature but out of which July has 20.6 which is higher than all.

(b) Here, average temperature of June is 17.23 and December is -1.53.

So, difference between the average temperatures in June and December is: which means temperature in June is higher than in December.

Question 150

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Show the correlation on scatter diagram of application and its size in MB.

Explanation

Here, applications can be of any size, so the correlation can be shown as below:

Applications Can be of Any Size, So the Correlation Can Shown

So, it shows the Zero correlation because it shows the no gradient.

Question 151

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The scale on a map is 2: 300000. A road is 5.8 centimeters long on the map. Solve for the actual length of the road (in kilometers) .

Explanation

Here, meaning of 2: 300000 is 2 cm long road is magnified by 300000 times on the map.

  • So, here 5.8 cm long road on the map can be
  • Now, 100 cm = 1 m, so 174000 cm = ?

  • Now, 1000 m = 1 km, so 17400 m = ?

  • So, length of road is 17.4 kilometers.

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