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MakcuM [25]
3 years ago
10

Suppose y varies inversely with x, and y = 39 when x = 13. What is the value of y when x = 26 ?

Mathematics
1 answer:
Fittoniya [83]3 years ago
6 0

9514 1404 393

Answer:

  y = 39/2 = 19.5

Step-by-step explanation:

When x is multiplied by 2 from 13 to 26, y will be multiplied by the inverse of that:

  y = (1/2)(39) = 39/2 = 19.5

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Answer: -4/15

Step-by-step explanation: To add these two fractions together,

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Since our denominators of 5 and 3 have no factors in common,

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In order to get a denominator of 15 in each fraction,

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That gives us -9/15 + 5/15 which simplifies to -4/15.

As your last step, make sure that the fraction

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3 years ago
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2 years ago
Prove by mathematical induction that 1+2+3+...+n= n(n+1)/2 please can someone help me with this ASAP. Thanks​
Iteru [2.4K]

Let

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P(n+1) states that

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Since we're assuming P(n), we can substitute the sum of the first n terms with their expression:

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Which terminates the proof, since we showed that

P(n+1):\ 1+2+\ldots+n+(n+1) =\dfrac{n^2+3n+2}{2}

as required

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3 years ago
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3 0
3 years ago
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algol [13]

Answer: Option A is the correct answer, y = x + 2

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Step-by-step explanation:

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2 years ago
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