Answer:
- Melissa: 30
- Ryan: 23
- Chau: 69
Step-by-step explanation:
Let r represent the number of messages Ryan sent. Then Chau sent 3r and Melissa sent r+7. Their total was ...
(r+7) +(r) +(3r) = 122
5r +7 = 122 . . . . . collect terms
5r = 115 . . . . . . . . subtract 7
r = 23 . . . . . . . . . . divide by 5
Ryan sent 23, Melissa sent 30, and Chau sent 69 text messages.
Answer:
It is 8.72 if it needs to be rounded up. If not, it is 8.71779788708
Step-by-step explanation:
Answer:
42
Step-by-step explanation:
simplify
Answer:
EF = 11
Step-by-step explanation:
AD/DE = 3
Therefore, DC/3 = EF
33/3 = 11
Answer:
S=-7
Step-by-step explanation:
-s - 7 = -1 • (s + 7)
2.1 Solve : -s-7 = 0
Add 7 to both sides of the equation :
-s = 7
Multiply both sides of the equation by (-1) : s = -7
