Question 4: Gerard and Martin were both given a pay rise. Gerard was given a 25% pay rise and Martin a 5% pay rise.
The ratio of Gerard's salary to Martin's salary is now 12:7
Martin is now paid £21000
Work out Gerard's pay before the pay rise.

which of the following sets of data would produce the largest value for an independent-measures t statistic? the two sample means are 10 and 20 with variances of 20 and 25 the two sample means are 10 and 20 with variances of 120 and 125 the two sample means are 10 and 12 with sample variances of 20 and 25 the two sample means are 10 and 12 with variances of 120 and 125

What expression is equivalent to log3(x+4)

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?