3 years ago

State the domain and range of the function f(x) =2[[x]]

Mathematics

2 answers:

Kobotan [32]3 years ago

7 0

Answer:

Step-by-step explanation:

It's all down the the double parentheses. They mean 'round down to the nearest integer'. Also because of the 2 the integer will be even.

Sidana [21]3 years ago

3 0

Answer:

A real Even integers

Step-by-step explanation:

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Answer:

x = 2y - 7

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Answer:

Step-by-step explanation:

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3 years ago

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7nadin3 [17]

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3 years ago

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choli [55]

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3 years ago

The time (X) to complete a standardized exam is approximately normal with a mean of 70 minutes and standard deviation of 10 minu

notka56 [123]

Answer:

77.88 minutes

Step-by-step explanation:

Given that :

Mean (m) = 70

Standard deviation (s) = 10

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Using the formula :

Zscore = (X - mean) / standard deviation

80th percentile = 80/100 = 0.8 has a Zscore = 0.7881

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3 years ago