Two friends washed 18 cars in 2 hours. then they worked more slowly and washed 2 cars fewer per hour. how many cars did they was
1 answer:
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If the series is made up of numbers in an arithmetic progression, you have
where
is the first term and 
is the common difference between terms.
Since the last term in the series is
, you have
Solve the system
and you'll find that the first term is
(with 
).
where
Since the last term in the series is
Solve the system
and you'll find that the first term is
Answer:
12 cans
Step-by-step explanation:
The area of the outside of the tank:
radio = half diameter = 4.5 ft.
base:
Top: = base
cylinder:
Total area to paint:
Number of cans of paint:
Hope this helps