Sub in given values to get 2 equations.

Solve system using elimination. Add the equations together, cancelling out 'b'

Sub into first equation to get value for 'b'
Answer:
I think that Sarah sent 70 percent of the text messages , so you have to shade 70 of them .
Answer:
8.9
Step-by-step explanation:
1. DE:BC=AD:AB
2. AD=AB+BD, but according to the conditions AB=5, then
AD=5+BD.
3. after the substitution DE=16; BC=9; AB=5 and AD=5+BD into the formula:
16:9=(5+BD):5;

BD=80/9 - 5≈3.9.
4. if AD=AB+BD, then AD=5+3,9=8,9
Your answer would be 51.6
Answer:
im pretty sure it is .17
Step-by-step explanation: