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zhannawk [14.2K]
2 years ago
12

What does x - 9 multiplied by x + 4 equal

Mathematics
1 answer:
GarryVolchara [31]2 years ago
5 0

Answer:

x^2 - 5x -36

Step-by-step explanation:

multiply x-9 by x to get x^2 -9x. multiply x-9 by 4 to get 4x-36. add these two together to get x^2 - 9x + 4x - 36. simplify to get x^2 - 5x -36

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Evaluate f(−3) for f(x)=2x2−x+5.
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Answer: -4

Step-by-step explanation:

2(-3)*2-(-3)+5= -4

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3 years ago
Refer to the accompanying data set of mean​ drive-through service times at dinner in seconds at two fast food restaurants. const
Anton [14]

Step-by-step explanation:

Assuming the data is as shown, restaurant X has a mean service time of 180.56, with a standard deviation of 62.6.

The standard error is SE = s/√n = 62.6/√50 = 8.85.

At 95% confidence, the critical value is z = 1.960.

Therefore, the confidence interval is:

180.56 ± 1.960 × 8.85

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At 95% confidence, the critical value is z = 1.960.

Therefore, the confidence interval is:

152.96 ± 1.960 × 6.96

152.96 ± 13.64

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4 0
3 years ago
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Arlecino [84]
Scalene,Acute i think it is haha
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3 years ago
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mihalych1998 [28]

Answer:

163%

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