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Mathematics, 22.05.2021 04:20 hit89
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Statistics 2
The line graph below shows the daily production of a private oil producer, in hundreds of barrels, over a five day period.

Copy and complete the table to show the daily oil production.
Day
Monday
Tuesday
Wednesday
Thursday
Friday
Oil
Production
(Hundreds of barrels)
3
4
Between which two consecutive days was there the greatest increase in oil production?
What is the average oil production over the five day period? (6 marks)
Twenty bags of coconut milk powder are weighed. The mass of each bag, to the nearest kg, is recorded as shown below.

Mass (kg)
Midpoint, x
Frequency , f
fx
1-10
5.5
5
27.5
11-20
21-30
31-40
41-50
State the lower class limit for the class interval 31-40.
State the lower class boundary for the class interval 31-40.
State the class width for the class interval 31-40.
Copy and complete the table above.
Hence, calculate the mean mass of milk powder in each bag.
(give your answer to 1 decimal place) (11 marks)
The table below shows the favourite fast foods of some form four students.
Food
Frequency
Doubles
30
Fried Chicken
25
BBQ
12
Pizza
13
Calculate the sector angles that would represent each food in a pie chart.
(8 marks)
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Answers: 3
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If m∠abc = 70°, what is m∠abd? justify your reasoning. using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°. using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°. using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality. using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.
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