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NARA [144]
3 years ago
14

I NEED HELP PLEASE PLEASE IN ALGEBRA!

Mathematics
1 answer:
babymother [125]3 years ago
5 0

Answer:

what is question?

Step-by-step explanation:

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A coin lands on Heads 200 times. The relative frequency of Heads is 0.4 How many times was the coin thrown?
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A King in ancient times agreed to reward the inventor of chess with one grain of wheat on the first of the 64 squares of a chess
statuscvo [17]
Let's start by visualising this concept.

Number of grains on square:
1   2   4   8   16 ...

We can see that it starts to form a geometric sequence, with the common ratio being 2.

For the first question, we simply want the fifteenth term, so we just use the nth term geometric form:
T_n = ar^{n - 1}
T_{15} = 2^{14} = 16384

Thus, there are 16, 384 grains on the fifteenth square.

The second question begs the same process, only this time, it's a summation. Using our sum to n terms of geometric sequence, we get:
S_n = \frac{a(r^{n} - 1)}{r - 1}
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Thus, there are 32, 767 total grains on the first 15 squares, and you should be able to work the rest from here.
6 0
3 years ago
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Solve the following system using substitution
julsineya [31]
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The rectangle below is enlarged using a scale factor of 1.5. What will be the new length and width of the rectangle?
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Step-by-step explanation:

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