A
x=y^2-9
x+9=y^2
square root both sides
+-sqrt(x+9)
Answer:
B
Step-by-step explanation:
The graph (although it doesn't show it) is making points at every 20 (dollars) mark and also lines up to each hour mark, meaning that for every hour, Tanya makes 20 dollars.
Any number that makes an equation true is a "solution of an equation" it id a solution....(i hope this helps) *smiles*
Answer:
See below
Step-by-step explanation:

Solve:


Check:





Solve:





Solve:

Answer:
Step-by-step explanation:
2 6/7 * 4/5....turn ur mixed number into an improper fraction and just multiply
20 / 7 * 4 / 5 = 80/35 which reduces to 16/7 or 2 2/7