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liq [111]
3 years ago
14

Which of the following represents the factorization of the polynomial below x^2+9x+20

Mathematics
1 answer:
rusak2 [61]3 years ago
5 0

Answer:

(x+5)(x+4)

Step-by-step explanation:

x^2+9x+20

Factor

What 2 numbers multiply to 20 and add to 9

5*4 = 20

5+4 =9

(x+5)(x+4)

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To which interval would we restrict f(x) = cos (x-π/4) so that f(x) is invertible?
nadezda [96]

Answer:

The range of x values for which y is unique is 2·π

Step-by-step explanation:

For a function j: X → Y to be invertible, we have that for every y in Y, there is associated only one x which is an element of x

Hence, f(x) = cos(x - π/4) gives

the x intercept at two penultimate points of the graph of cos(x - π/4) are;

x = 2.36, and x = 8.64

x = 3/4·π, and x = 2.75·π = 2\tfrac{3}{4}\cdot \pi

Hence the range of x values for which y is unique is presented as follows

2\tfrac{3}{4}\cdot \pi - \frac{3}{4}\cdot \pi = 2}\cdot \pi

The range of x values for which y is unique = 2·π.

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8 0
2 years ago
A frame is 4 inches tall and 3 inches wide if it is enlarged to a height of 24 inches then how wide will it be
Katarina [22]
Height: width
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8 0
3 years ago
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olga55 [171]

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Step-by-step explanation:

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6 0
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