5a+5b+5c=-20 4a+3b+3c=-6 -4a+3b+3c=9
1 answer:
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Answer:
7069.5 ft^2
Step-by-step explanation:
Step one:
given data
dimension
radius of 15 feet
height of 60 feet
Required
The surface area of the tank
Step two:
substitute
A= 7069.5 ft^2
Answer: 100
Step-by-step explanation:
Given : The lodhl diner offers a meal combination consisting of an appetizer, a soup, a main course, and a dessert.
There are 5 appetizers, 5 soups, 4 main courses, and 5 desserts.
Also, a dessert and a appetizer are not allowed to take together.
By Fundamental counting principal ,
Number of three-course meals with dessert and without appetizer :
(1)
Number of three-course meals with appetizer and without dessert :
(2)
Now, the number of meals with either dessert or appetizer :-
[Add (1) and (2)]