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WARRIOR [948]
3 years ago
9

SA scuba diver reached a depth of -14 feet (below

Mathematics
2 answers:
defon3 years ago
6 0

Answer:

+2

Step-by-step explanation:

i did it

shtirl [24]3 years ago
3 0

Answer:

+2 ft

Step-by-step explanation:

He descends -12 feet (negative descend is an ascend) so he ascends 12 feet

-14 + 12 = -2 so he needs to travel 2ft

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H(-2)=(-2)/2
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3 years ago
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Sue uses the expression 8x3000+ 8x200+ 8 x 9 to help solve a multiplication problem what is sues multiplication problem
Iteru [2.4K]

we know that

the expression (8x3000+ 8x200+ 8 x 9) is equal to

8*3,000+ 8*200+ 8 * 9 =8*(3,000+200+9)\\  =8*(3,209)\\  = 25,672

therefore

<u>the answer is</u>

Sue's multiplication problem is to find the product of 8 times 3,209 in expanded form


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3 years ago
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I'll give brainliest to whoever solves first correctly
almond37 [142]

Answer:

The answer rewritten is y=x-3+x+2-x-5=x-6

Step-by-step explanation:

5 0
2 years ago
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The amount of coffee that a filling machine puts into an 8-ounce jar is normally distributed with a mean of 8.2 ounces and a sta
nordsb [41]

Answer:

73.30% probability that the sampling error made in estimating the mean amount of coffee for all 8-ounce jars by the mean of a random sample of 100 jars will be at most 0.02 ounce

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal probability distribution

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

In this problem, we have that:

\mu = 8.2, \sigma = 0.18, n = 100, s = \frac{0.18}{\sqrt{100}} = 0.018

What is the probability that the sampling error made in estimating the mean amount of coffee for all 8-ounce jars by the mean of a random sample of 100 jars will be at most 0.02 ounce?

This is the pvalue of Z when X = 8.2 + 0.02 = 8.22 subtracted by the pvalue of Z when X = 8.2 - 0.02 = 8.18. So

X = 8.22

Z = \frac{X - \mu}{\sigma}

By the Central Limit Theorem

Z = \frac{X - \mu}{s}

Z = \frac{8.22 - 8.2}{0.018}

Z = 1.11

Z = 1.11 has a pvalue of 0.8665

X = 8.18

Z = \frac{X - \mu}{s}

Z = \frac{8.18 - 8.2}{0.018}

Z = -1.11

Z = -1.11 has a pvalue of 0.1335

0.8665 - 0.1335 = 0.7330

73.30% probability that the sampling error made in estimating the mean amount of coffee for all 8-ounce jars by the mean of a random sample of 100 jars will be at most 0.02 ounce

8 0
3 years ago
D Answer each question.
nika2105 [10]

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.

6 0
2 years ago
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