Class a has 30 pupils and class b has 19 pupils. both classes sit the same maths test. the mean score for class a is 34. the mean score for class b is 75. what is the mean score (rounded to 1 dp) in the maths test across both classes?

The lengths of nails produced in a factory are normally distributed with a mean of 4.91 centimeters and a standard deviation of 0.05 centimeters. find the two lengths that separate the top 4% and the bottom 4%. these lengths could serve as limits used to identify which nails should be rejected. round your answer to the nearest hundredth, if necessary.

Arecipe calls for 32 fluid ounces of heavy cream. how many 1 pint containers of heavy cream are needed to make the recipe?

The interior angles formed by the side of a hexagon have measures of them up to 720° what is the measure of angle a