In a class 40% of the pupils are girls.
On Tuesday, 25% of the
girls were absent, if 15 girls were
present, how many boys are there
in that class?
71
TEACHER'S SIGNATURE​

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart

Sam is picking fruit from a basket that contains many different kinds of fruit. which set of events is independent?