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3 years ago

Is 89/10 rational or irrational

Mathematics

1 answer:

Mrac [35]3 years ago

4 0

Answer:

Yes

Step-by-step explanation:

For 89 to be a rational number, the quotient of two integers must equal 89. In other words, for 89 to be a rational number, 89 must be able to be expressed as a ratio where both the numerator and the denominator are integers (whole numbers). ... Thus, the answer to the question "Is 89 a rational number?" is YES.

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Step-by-step explanation:

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2 years ago

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3 years ago

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GarryVolchara [31]

Answer:

Step-by-step explanation:

Both 115 and 145 mph are above the mean. Draw a normal curve and mark these speeds. 115 mph is 1 standard deviation above the mean; 130 would be 2 standard deviations above the mean; and 145 would be 3 s. d. above it.

We need to find the area under the standard normal curve between 115 and 145. This is equivalent to the area under the standard normal curve between z = 1 and z = 3.

I used my TI-83 Plus calculator's DISTR function "normalcdf(" to calculate this area: normalcdf(1, 3) = 0.1573.

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3 years ago