Answer: the number of shoppers on the first day is 125
Step-by-step explanation:
The number of shoppers is 20% more than the numbers of shoppers the day before. It means that the number of shoppers is increasing in geometric progression. The formula for determining the sum of n terms, Sn of a geometric sequence is expressed as
Sn = (ar^n - 1)/(r - 1)
Where
n represents the number of term in the sequence.
a represents the first term in the sequence.
r represents the common ratio.
From the information given,
r = 1 + 20/100 = 1.2
n = 4(first 4 days)
S4 = 671
Therefore, the expression for the first 4 days is
671 = (a × 1.2^(4) - 1)/1.2 - 1
671 = (a × 1.2^(4) - 1)/0.2
671 = 1.0736a/0.2
671 = 5.368a
a = 671/5.368
a = 125
You can use a matrix equation to discover that the motel clerk has 45 $1 bills and 12 $10 bills.
Answer:
n=45
Step-by-step explanation:
30=1, 2, 3, 5, 6, 10, 15 and 30.
45=1, 3, 5, 9, 15 and 45.
-hope it helps
Step-by-step explanation:
15 long
12 wide
10 high
we need all for walls
hight times length two times ( these are the front and back walls )
hight times width two times ( These are the side walls )
the roof is
width times length (only once as only the ceiling)
same measurement as the floor
can you work it out with that
please mark brainiest
Answer:
Step-by-step explanation:
We are given the expression, 
On simplifying, we have,
i.e. 
Now, we will rationalize the expression,
i.e. 
i.e. 
i.e. 
Since, 
, we get,
i.e. 
i.e.
So, the simplified expression is .
