The answer is C, I just took the text and I chose that and it worked for me
Answer:
40/3, 172/3, respectively
Step-by-step explanation:
x + 9 = 2y
2x = 2y + 2
x + 9 = 2(2x - 2)
4x - 4 = x + 9
3x - 13 = 0
x = 13/3
y = 40/6
RT = 13/3 + 9 = 40/3
QS = 160/3 + 4 = 172/3
Answer:
About 21 weeks
Step-by-step explination:
Her bike is 775 dollars. Lets start there.
She will deposit 40 dollars every Friday, or, every week.
With this logic, we would only need 20 weeks. I found this by doing 775/40.
BUT
We have one more complication. Andrea owes 45 dollars to her sister. It is important to note that this is a ONE TIME payback. This is NOT weekly.
Here is how we will do it:
Andrea needs 775(bike)+45(sister)=820 dollars in debt
820/40 a week=20.5 weeks.
Since .5 of a week is 3.5, and I don't think .5 of a day applies here, we will round up and say that andrea will need roughly 21 weeks to earn all the money she needs.
Final answer: 21 weeks
A square has 4 right angels and 4 sides with equal angels ;)