School A : 750 + 200 = 950 per semester
School B : if u get a 10% discount, then ur actually paying 90%
0.90(1000) = 900 per semester
The best deal would be school B...u would save $ 50 per semester by choosing B over A
Answer:
man that takes to much time but this is what I got 4,057.6
Answer:
C) 
Step-by-step explanation:
Given Equations:
A) 
B) 
In order to eliminate
we need to multiply
to equation B and add it to A.
Multiplying
to B.
⇒ 
⇒ 
⇒ 
Adding it equation A.

+ 
We get 
Thus
is eliminated.
So, the expression used to eliminate
is:

Answer:
49
Step-by-step explanation:
Product of GCD and LCM = Product of the 2 numbers
Product of GCD and LCM = 7 × 140 = 980
One number is 20 so let the other number be N
20×N=7×140
20N=980
2N=98
N=49
so the other number is 49
If you do 81 x 9 which equals 729. If you want to check, you do 729 divided by 9 and you get 81.