X= 8
Y= -7
If you use elimination:
–3y–4x=–11
3y–5x=–61
Add the two equations and get
–9x=–72
Divide by –9 on both sides
X=8
Substitute 8 in for x
–3y–4(8)=–11
Simplify
–3y–32=–11
Add 32 on both sides
–3y=21
Divide by –3 on both sides
Y=–7
Now, she writes 4 notes every 1 hour.
so in 2 hours she has written 8 notes, and the remaining is 50 - 8 or 42.
in 3 hours has written 12 notes, and remaining are 50 - 12, or 38, and so on.
now, how many hours will it take her to them all? or, how many times does 4 go into 50? 50 /4 or 12.5.
so it will take her 12 hours and a half to do them all, at that time, the remaining notes are 0, because she's done, and the hours are 12 and a half.
X - 8 > -3
x - 8 + 8 > -3 + 8
x > 5
The answer is the third choice.
The volume of the rectangular prism:
V = length × width × height
Answer:
Your answer is 1/5 Hope this helps :D