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3 years ago

Choose the correct formula for combination. A . n!/r!(n-r)! B. n!/(n-r)!

Mathematics

1 answer:

OleMash [197]3 years ago

4 0

Answer:

Step-by-step explanation:

The number of combinations of n objects taken r at a time is determined by the following formula: C(n,r)=n!/(n−r)!

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The answer is -10 because a negative plus a positive is negative

Answer is -10

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3 years ago

G a tanker has developed a leak in pristine bay and has spilled a considerable amount of oil. the good news is that oil-eating b

alexandr402 [8]

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3 years ago

A quantity with an initial value of 600 decays exponentially at a rate of

Snowcat [4.5K]

Answer:

The value of the quantity after 87 months will be of 599.64.

Step-by-step explanation:

A quantity with an initial value of 600 decays exponentially at a rate of 0.05% every 6 years.

This means that the quantity, after t periods of 6 years, is given by:

$Q(t) = 600(1 - 0.0005)^{t}$

What is the value of the quantity after 87 months, to the nearest hundredth?

6 years = 6*12 = 72 months

So 87 months is 87/72 = 1.2083 periods of 6 years. So we have to find Q(1.2083).

$Q(t) = 600(1 - 0.0005)^{t}$

$Q(1.2083) = 600(1 - 0.0005)^{1.2083} = 599.64$

The value of the quantity after 87 months will be of 599.64.

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3 years ago

If 7 - 1 is 6 then what would it be if you multiply it by 11700 and subtract by 5000?

steposvetlana [31]

Answer: 65200

7 - 1 = 6 x 11700 = 70200 - 5000 = 65200

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2 years ago

At a pet store, Ms. Pike paid $34.75 for 5 dog bowls and 7 bones. Mr. Moore paid $20.50 for 3 dog bowls and 4 bones. Determine t

lianna [129]

Answer:

Step-by-step explanation:

t a pet store, Ms. Pike paid $34.75 for 5 dog bowls and 7 bones. Mr. Moore paid $20.50 for 3 dog bowls and 4 bones. Determine the cost of one dog bowl(x) and one bone(y).

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2 years ago