Haylee opened her savings account with $440 in week 1. each week after this, she deposited $65 in her account. how much money wi
2 answers:
Answer: Haylee has $2000 in her savings account after week 25.
Step-by-step explanation:
Given: Haylee opened her savings account with $440 in week 1.
Each week after this, she deposited $65 in her account.
It is an arithmetic series, where and d=65
to find the amount in bank after week 25 , put the values in the formula
with n=25
Hence, Haylee has $2000 in her savings account after week 25.
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Answer:
Both the boats will closet together at 2:21:36 pm.
Step-by-step explanation:
Given that - At 2 pm boat 1 leaves dock and heads south and boat 2 heads east towards the dock. Assume the dock is at origin (0,0).
Speed of boat 1 is 20 km/h so the position of boat 1 at any time (0,-20t),
Formula : d=v*t
at 2 pm boat 2 was 15 km due west of the dock because it took the boat 1 hour to reach there at 15 km/h, so the position of boat 2 at that time was (-15,0)
the position of boat 2 is changing towards east, so the position of boat 2 at any time (-15+15t,0)
Formula : D=
⇒
Now let
∵
⇒ t= 450/1250
⇒ t= .36 hours
⇒ = 21 min 36 sec
Since F"(t)=0,
∴ This time gives us a minimum.
Thus, The two boats will closet together at 2:21:36 pm.
total bill before any discounts $13.
she is a student, so she gets 20% off.
she brought an item of clothing, so she gets 5% off.
so she's really getting 20% + 5% off, namely 25% off her bill.