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natka813 [3]
2 years ago
9

What is the product? -4. [8/-1/-5/9]

Mathematics
1 answer:
Bad White [126]2 years ago
8 0

Answer:

- 32, 4, 20, and - 36

Step-by-step explanation:

We have to find the product of -4 with 8 / - 1 / - 5 / 9.

Now, the product of - 4 and 8 is = - 32  

{Since the product of a positive number and a negative number is always negative}

The product of - 4 and -1 is = 4

{Since the product of two negative numbers is always positive}

The product of - 4 and - 5 is = 20

The product of - 4 and 9 is = -36

(Answer)

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Researchers recorded the speed of ants on trails in their natural environments. The ants studied, Leptogenys processionalis, all
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This question is Incomplete

Complete Question

Researchers recorded the speed of ants on trails in their natural environments. The ants studied, Leptogenys processionalis, all have the same body size in their adult phase, which made it easy to measure speeds in units of body lengths per second (bl/s). The researchers found that, when traffic is light and not congested, ant speeds vary roughly Normally, with mean 6.20 bl/s and standard deviation 1.58 bl/s. (a) What is the probability that an ant's speed in light traffic is faster than 5 bl/s? You may find Table B useful. (Enter your answer rounded to four decimal places.)

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Step-by-step explanation:

We solve using z score formula

z = (x-μ)/σ, where

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σ is the population standard deviation.

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The probability that an ant's speed in light traffic is faster than 5 bl/s is P( x > 5)

Probability value from Z-Table:

P(x<5) = 0.22378

P(x>5) = 1 - P(x<5)

= 1 - 22378

= 0.77622

Approximately to 4 decimal places = 0.7762

The probability that an ant's speed in light traffic is faster than 5 bl/s is 0.7762

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