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defon
3 years ago
14

D Answer each question.

Mathematics
1 answer:
nika2105 [10]3 years ago
6 0

Answer:

Step-by-step explanation:

1. Humans can detect sounds in a frequency range from about 20 Hz to 20 kHz.

2. speed of sound is 343 m/sec.

3. two animals are Bats and Whales.

4.The voiced speech of a typical adult male will have a fundamental frequency from 85 to 180 Hz, and that of a typical adult female from 165 to 255 Hz.

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Luis distributes 49 roses equally among 7 friends. Then, 3 of his friends combine the roses they received to make a bouquet. How
antoniya [11.8K]

Answer:

21 roses

Step-by-step explanation:

49 / 7 = 7

Each friend got 7 roses.

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3 friends combine their roses together, making a bouquet of 21 roses.

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Suppose Eric and Isaac both drive the same car, and have the same
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The amount of time it takes Ariana to do a math problem is continuous and uniformly distributed between 38 seconds and 79 second
solniwko [45]

Answer:

29.27% probability that it takes Ariana between 58 and 70 seconds to do a math problem

Step-by-step explanation:

An uniform probability is a case of probability in which each outcome is equally as likely.

For this situation, we have a lower limit of the distribution that we call a and an upper limit that we call b.

The probability that we find a value X between c and d, d being greater than c, is given by the following formula:

P(c \leq X \leq d) = \frac{d-c}{b-a}

Uniformly distributed between 38 seconds and 79 seconds.

This means that a = 38, b = 79

What is the probability that it takes Ariana between 58 and 70 seconds to do a math problem

c = 58, d = 70

P(58 \leq X \leq 70) = \frac{70 - 58}{79 - 38} = 0.2927

29.27% probability that it takes Ariana between 58 and 70 seconds to do a math problem

4 0
3 years ago
What is the given variables of (ab²) ÷ a + 24 – b; a = -2 b= 3 ?
RoseWind [281]

Answer:

-18/19

Step-by-step explanation:

(ab²) / a + 24 - b

(-2)(3)² / -2 + 24 - 3

-18/19

4 0
2 years ago
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