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%
the answer for x is -3 x= -3. i hope this helped you!
(9 + 4i ) + ( 36 - 2i) is the equivalent complex number
Answer:
y=5x+2
Step-by-step explanation:
Answer
Rhonda's savings is r and 10 would be what she already has so
Step-by-step explanation:
sum of = +
r + 10 = 64