3 years ago

A few more math problems

1 answer:

4 0

The answer to the first one would be B. The formula for exponential decay with the filled in values are as follows: 25000(.85)^5 Just plug it into a calculator.
The answer to the second question would also be B. The easiest way to get this answer is to find the slope, or how much the y is changing per change of one in x. In this case you can subtract to find it increases by 3 each time. Subtract three from the y value at one to get the y value at 0 or the y intercept

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Find n(A) of the set {-3,-1,1,3,5,7,9}

daser333 [38]

Answer:

n(A) = 7

Step-by-step explanation:

Let set A be A = {a,b,c}

We can say n(A) = 3

So basically n(A) means the "number of elements (unique) in set A"

They have to be unique.

For this problem, set A is:

A = {-3,-1,1,3,5,7,9}

If we count, there are 7 unique elements in this set. Thus:

n(A) = 7

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Step-by-step explanation:

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olganol [36]

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Step-by-step explanation:

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MA_775_DIABLO [31]

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Step-by-step explanation:

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3 years ago

If three eighths of a class is absent what percentage of the class is present?

Brrunno [24]

Answer:

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