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Mathematics

2 answers:

Marrrta [24]3 years ago

8 0

The answer to this are:
1) D
2) A and B
3) C

hope this works.

katrin [286]3 years ago

3 0

3.) r=2: 2+4/15= 6/15=2/5

2.) -3a-15=a: the fraction is negative. meaning the answer is negative, leaving a and c as choices. You can't square a since it is on different sides of the equation leaving you with c.

1.) answer is 5(x+4)=30: 3 is 2, meaning you would use the 2.

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There are 8 members on a board of directors. If they must form a subcommittee of 5 members, how many different subcommittee are

Assoli18 [71]

56 different sub-committees are possible

Step-by-step explanation:

When the selection has to be made without order, combinations are used.

The formula for combination is:

$C(n,r) = \frac{n!}{r!(n-r)!}$

Here,

Total members = n = 8

Members to be selected = r = 5

So,

$C(8,5) = \frac{8!}{5!(8-5)!}\\= \frac{8!}{5!}\\=56\ ways$

Hence,

56 different sub-committees are possible

Keywords: Combinations, Selection

Learn more about combinations at:

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3 0

3 years ago

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Marianna [84]

Answer:

a) $12,440.43

b) $8,000.00

c) $4,440.43

Step-by-step explanation:

the question is a bit ambiguous, I calculated from zero initial Deposit to $100 per quarter. If they deposited $100 initially and then $100 quarterly for 20 years then the numbers are as follows.

a) $12,671.05

b) $8,100

c) $4,571.05