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Serjik [45]
3 years ago
15

How many degree black belts in tae kwon do are there?

Mathematics
1 answer:
Lubov Fominskaja [6]3 years ago
5 0
I think there are 4-5
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Which system of equations could be used to determine how many of each coin you have
kirza4 [7]
<h3>Answer: Choice A</h3>

0.10d + 0.05n = 2.25

d = 2n

================================================

Explanation:

n = number of nickels

d = number of dimes

we have twice as many dimes as nickels, so we could have something like 18 dimes and 9 nickels. Algebraically we would write d = 18 and n = 9. The equation that fits this is d = 2n. The answer is between A and B at this point.

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Choice A is correct

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0.10d = value of all the dimes in dollars

n = number of nickels

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0.10d + 0.05n = total value from both coins combined

2.25 =  total value from both coins combined

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A circular clock face is stenciled along its edge. The radius of the clock is 12 centimeters, so the stenciling covers about cen
Inessa05 [86]

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6 srry if dis is wrong sis

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so im guessing the answer is 6 idk i haven't done this inna min. i hope this was helpful <3

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