Mathematics, 31.01.2022 17:00 kaeakal
There are 10 girls and 20 boys in a class. The class has a test.
The mean mark for all the class is 70.
The mean mark for all the boys is 62 Work out the mean mark for the girls.
Answers: 2
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The table below shows the approximate masses of a dust particle and a grain of pollen. dust particle 0.000000778 g grain of pollen 0.00000000155 g the mass of a dust particle can be estimated and written in the form a Γ 10^b, where a = 8 and b = the mass of a grain of pollen can be estimated and written in the form a Γ 10^b, where a = 2 and b = based on the estimates, the mass of a dust particle is approximately blank times larger than the mass of a grain of pollen.
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There are 10 girls and 20 boys in a class. The class has a test.
The mean mark for all the class i...
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