5 of 5 A, B & C form a triangle where Z BAC = 90°.
AB = 4.6 mm and CA = 12.6 mm.
Find the length of BC, giving your answer rounded to 1 DP.

Which ordered pair (c, d) is a solution to the given system of linear equations- c+2d=13 -9c-4d=-15

Evaluate the expression for the given value of the variable 7a - 4a for a =8

The random variable x is the number of occurrences of an event over an interval of ten minutes. it can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. it is known that the mean number of occurrences in ten minutes is 5.3. the appropriate probability distribution for the random variable