Answer:
We use it to substitute an unknown number. We have a variable for a number we don’t know and as we solve the problem we can find the answer for the variable or unknown number.
Step-by-step explanation:
I hope it helps! Have a great day!
Anygays-
Answer:
63
Step-by-step explanation:
This is because 25% of 84 is 21. He knows how to play 21 songs. 84-21=63.
63 is how many songs he does NOT know how to play.
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
1,8272 --- 8,000
17,282 --- 80
8,000÷80=100 times greater
