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Asked by Abc

Here are 6 number cards -4, -2,-1,5,6,8. Arrange the number cards into three pairs with the same total.

Asked by Amy

C is a circle with centre the origin. A tangent to C passes through the points (-30, 0) and (0, 10) Work out an equation of C. You must show all your working.

Asked by Cadence

Michael randomly selected 30% of the 7th grade students at school to found out their favorite season. What is a reasonable prediction of the number of 200 7th graders who would choose summer as their favorite season?

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