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taurus [48]
3 years ago
11

Factor expression in x and y. x² −25−2xy +y²

Mathematics
1 answer:
Talja [164]3 years ago
5 0
x^2-2xy+y^2-25= (x-y)^2-25= \\ \\ =[(x-y)-5][(x-y)+5]= \\ \\ =\boxed{(x-y-5)(x-y+5)}
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Consider a sequence defined by the recursive rule f(1) = 15; f(n)=f(n - 1) - 6 for n 2. Choose True or
Shkiper50 [21]

Answer:

The second term of the sequence is 8  False ⇒ B

The third term of the sequence is 3  True ⇒ A

The fourth term of the sequence is -3  True ⇒ A

Step-by-step explanation:

The form of the recursive rule is:

f(1) = first term; f(n) = f(n - 1) + d, where

  • f(1) is the first term
  • f(n) is the nth term
  • f(n - 1) is the term before the nth term
  • d is the common difference

∵ f(1) = 15, f(n) = f(n - 1) - 6 for n ≥ 2

∴ The first term = 15

∴ d = -6

let us find the 2nd, 3rd, and 4th terms

∵ n = 2

∴ f(2) = f(1) - 6

∵ f(1) = 15

∴ f(2) = 15 - 6 = 9

∴ The second term is 9

∴ The second term of the sequence is 8  False

∵ n = 3

∴ f(3) = f(2) - 6

∵ f(2) = 9

∴ f(3) = 9 - 6 = 3

∴ The third term is 3

∴ The third term of the sequence is 3 True

∵ n = 4

∴ f(4) = f(3) - 6

∵ f(3) = 3

∴ f(4) = 3 - 6 = -3

∴ The fourth term is -3

∴ The fourth term of the sequence is -3 True

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3 years ago
Evaluate 0 × |-6|. ......
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Answer:

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Step-by-step explanation:

Any value multiplied by zero equals zero , thus

0 × | - 6 | = 0

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Step-by-step explanation:

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3 years ago
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Selection A is appropriate.

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The rim is exerting an upward force on your fingers (creating tension in your fingers and arms); gravity is exerting a downward force on your body's center of mass.
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3 years ago
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Many users of survey data, where numerical scales are associated with categories (i.e. 1=disagree, 2=neutral, 3=agree), treat it
Ksju [112]

Answer:

Survey data should not be treated as interval data because the measure distance between categories may not be perceived as the same.

Step-by-step explanation:

Maybe you can be right with the ranking, for example:

White = 1

Grey = 2

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But most sure the grey will be closer to black than it is to white, or vice versa.

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