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CaHeK987 [17]
3 years ago
10

Do these ratios form a proportion? 18:54 10:30

Mathematics
2 answers:
IgorC [24]3 years ago
5 0

Answer:

Step-by-step explanation:

kobusy [5.1K]3 years ago
5 0
Yes, they do. Turn the two ratios into fractions then reduce the two. If the reduced fractions are the same then they are proportional
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Given the four digits 2, 4, 6, and 7, how many different positive two-digit integers can be formed using these digits if a digit
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Answer: 12

Step-by-step explanation:

Given the question :

Given the four digits 2, 4, 6, and 7, how many different positive two-digit integers can be formed using these digits if a digit may not be repeated in an integer?

The number of different positive two integer number can be obtained by:

P(4, 2) = 4P2

Recall:

nPr = n! / (n - r)!

4P2 = 4! / (4 - 2)!

4P2 = 4! / 2!

4P2 = (4 * 3 * 2 * 1) / ( 2 * 1)

4P2 = 24 / 2

4P2 = 12

Hence, 12 different positive two-digit integers can be formed using these digits if a digit may not be repeated in an integer

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3 years ago
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bija089 [108]

Hello there! the winning time is 59.625 seconds.

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3 years ago
A right triangle has one leg that is 12 units long and a hypotenuse that is 15 units long. Find the length of the other leg
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Let a be the <span>other leg.
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By the Pythagorean theorem:

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Answer:

Third option

Step-by-step explanation:

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