Answer:
30
Step-by-step explanation:
discounting by 20% is the same as marking to 80% of the original cost. 80% = .8
set up equation and solve
.8x=24
x=30
Answer:
last one
Step-by-step explanation:
they both whole
Answer:
The mean of the total number of students is 85.5
Step-by-step explanation:
REcall that given n data points, the mean is given by
.
Let us number the students of the 24 students' class from 1 to 24 and the let us number the students of the other class from 25 to 47.
The question is to find the following
REcall the following
Then, from this equations we can deduce that
Therefore,
Answer:
the answer 14.0125. rounded = 14
Step-by-step explanation:
convert the percentage to a decimal
4.75% --> move two decimal places --> 0.0475
multiply 295*0.0475
= 14.0125