A) The result of adding the two equations is
.. (2.5y +3x) +(5x -2.5y) = (27) +(5)
.. 8x = 32 . . . . . . . . . . . . . . . . . . . . . . . your 2nd selection
b) The solution to the system is (4, 6), your 4th selection.
.. This is the only choice with x=4, the solution to part (a).
Answer:It is important to record each transaction so Bob knows how much money is in his account. That prevents being overdrawn. Recording debits and deposits helps with budgeting. It is good to keep receipts in case of any bank errors.
Step-by-step explanation:
They all involve descriptive statistics.
Answer:
-5
Step-by-step explanation:
6c + 14 = -5c + 4 + 9c
6c + 14 = 4c + 4
- 4. - 4
--------------------------
6c + 10 = 4c
- 6c - 6c
-----------------------
10 = -2c
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-2. -2
C = -5