At a swim meet, 8 different swimmers compete in the 800- meter freestyle race. How many different ways are there for these swimm
1 answer:
Using the arrangements formula, it is found that there are 40,320 ways for these swimmers to finish.
<h3>What is the arrangements formula?</h3>The number of possible arrangements of n elements is given by the factorial of n, that is:
In this problem, there are n = 8 swimmers, hence they can finish arranged in 8! ways, that is:
More can be learned about the arrangements formula at brainly.com/question/24648661
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Answer:
The amount invested in CDs is $1,340
The amount invested in the stock portafolio is $6,900
The amount invested in the saving accounts is $2,300
Step-by-step explanation:
Let
x ---->the amount invested in CDs at 2.1%
y ---> the amount invested in the stock portfolio at 2.5%
z ---> the amount invested in the savings account at 1.5%
----> equation A
----> equation B
substitute equation B in equation A
----> equation C
we know that
The total interest earned by the three amount must be equal to $231.69
so
----> equation D
substitute equation B and equation C in equation D
solve for y
<em>Find the value of x</em>
<em>Find the value of z</em>