Answer:
![\boxed{\sf n = 2m - 8}](https://tex.z-dn.net/?f=%20%5Cboxed%7B%5Csf%20n%20%3D%202m%20-%208%7D%20)
Step-by-step explanation:
Solve for n:
⇒2m - n = 8
Subtract 2 m from both sides:
⇒2m - 2m - n = 8 - 2m
2m - 2m = 0:
⇒-n = 8 - 2 m
Multiply both sides by -1:
⇒-n × (-1) = (8 - 2m) × (-1)
⇒n = 2m - 8
Maybe because people don't know the answer to your question or are just helping others at the moment.
Let X represent the cost of 1 pear and Y represent the cost of 1 peach.
Use the given information to set up a system of equations:
5X + 6Y = 11.20
3X = 2Y
Use the second equation to solve for Y:
3X = 2Y
Y = 1.5X
Plug the new found value for Y into the first, unused equation:
5X + 6(1.5X) = 11.20
Simplify:
5X + 9X = 11.20
or
14X = 11.20
Solve for X:
X = .8
Now that you have the value for X, you can plug it into either of the first two equations to solve for Y:
3X = 2Y
3(.8) = 2Y
2.4 = 2Y
Y = 1.2
Each pear is $0.80 and each peach is $1.20.
II The common ratio for this sequence is 3. this is not an arithmetic sequence because you need to multiply by 3 and arithmetic sequences you can only add and subtract. the next term would not be 54 because 27*3 is 81. n describes the nth term of the sequence. so if n was 1, 1+ 3 is for and we already know that the 1st term is equal to 1. Therefore, II is the correct answer.