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Alexus [3.1K]
3 years ago
7

To save money for a video game you put $1 in an envelope each day for 5 days you double the number of dollars in the envelopes f

rom the day before how much have you saved after 5 days
Mathematics
1 answer:
Klio2033 [76]3 years ago
6 0

Answer:you would have saved $31 after 5 days

Step-by-step explanation:

You double the number of dollars in the envelopes from the day before. This means the amount in a day is double the amount in the previous day. Therefore, amount of money in the envelope is increasing in geometric progression. The formula for determining the sum of n terms of a geometric sequence is expressed as

Sn = a(r^n - 1)/r - 1

Where

a represents the first term.

r represents the common ratio.

From the information given,

a = 1

r = 2

n = 5 days

S5 = 1(2^5 - 1)/2 - 1

S5 = 32 - 1 = 31

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Let's solve this question by breaking it up into fragments.

"8 more" means something plus 8.
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Therefore, "8 more than the product of 2x" means 2x + 8. Hope this helps!
8 0
3 years ago
Suppose Gabe, an elementary school student, has just finished dinner with his mother, Judy. Eyeing the nearby cookie jar, Gabe a
Paladinen [302]

Answer:

0.56

Step-by-step explanation:

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The probability of this is the same as 1 minus the probability that Gabe is NOT caught.

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Now we're looking for the probability that he gets caught. That is, probability that he does not "successfully" complete the 30secs task within the remaining 50secs.

Remember that each second has an equal probability of being the second that Judy comes back in. The latter of the 90 seconds does not carry a higher probability!

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6 0
3 years ago
A function is represented by the set of ordered pairs shown below.
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---------------------------------------
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The range is the set of outputs of a relation or function. In other words, it's the set of possible y values. Recall that ordered pairs are of the form (x,y) so the y coordinate is listed after the x. The output is listed after the input. The output values are y = 3, y = 3, y = 3, y = 5, y = 7. So we simply list these outputs without the "y=" portion. Toss out any duplicates. Only write the unique output values. 

The curly braces surrounding the list of values tells us that we have a set. 
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Answer:

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Step-by-step explanation:

just do simple multiplication

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Answer:

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Step-by-step explanation:

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