Answer:
The combined average is 94%
Step-by-step explanation:
for first period, number of students =40
average =96%
for second period, no of students =20
average =90%
but 
let 
=sum of students for the first period
=sum of students for the second period
for first period;
for second period,
therefore the combined average = 
that is 
so combined average is 94%
Fr we need the measurements to do the work bro
4.70, all the others can be simplified to 4.07 by taking away the zeroes after the 7 because they are not significant, The one before the 7 stays because it is significant as it is holding the tenths place value.
Numbers between 30 and 60 with a ones digit of 3 are 33, 43, and 53. Both 43 and 53 are primes, so this answer is flawed.
327 because its the nonnegative value of -327.
