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3 years ago

I am in need of some serious help here, I skipped this last time so I got a bad grade

Mathematics

1 answer:

lesantik [10]3 years ago

8 0

1. ab= 6 x 3 = 18 1) = 18

2. c + 4 = 2 + 4 = 6 2) = 6

3. a/b = 6/3 = 2 3) = 2

4. a - b - 6 - 3 = 3 4) = 3

5. 2c = 2(2) = 4 5) = 4

6. b/3 = 3/3 = 1 6) = 1

7. a - 1 = 6 - 1 = 5 7) = 5

8. 6 + c= 6 + 2 = 8 8) = 8

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Ginger wants to join a gym. She goes to the local gym and is told that there is a one-time fee of $100 to join and then a monthl

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2 years ago

Find the upper 20%of the weight?

meriva

Answer:

The upper 20% of the weighs are weights of at least X, which is $X = 0.84\sigma + \mu$ , in which $\sigma$ is the standard deviation of all weights and $\mu$ is the mean.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score 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 p-value, we get the probability that the value of the measure is greater than X.

Upper 20% of weights:

The upper 20% of the weighs are weighs of at least X, which is found when Z has a p-value of 0.8. So X when Z = 0.84. Then

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

$0.84 = \frac{X - \mu}{\sigma}$

$X = 0.84\sigma + \mu$

The upper 20% of the weighs are weights of at least X, which is $X = 0.84\sigma + \mu$ , in which $\sigma$ is the standard deviation of all weights and $\mu$ is the mean.

6 0

2 years ago

un carro que se mueve con velocidad constante recorre 120 km en 75 minutos,¿en que tiempo recorrera el carro una distancia de 20

Ivan

Answer:

320 minutos

Step-by-step explanation:

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3 years ago

Which statement justifies why

Marina CMI [18]

You have to give more information

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3 years ago

Which expression has the same value as the one below?<br> 38 + (-18)

Fittoniya [83]

Answer:

Step-by-step explanation:

38+(-18) can be changed to 38-18 and the answer will still be the same

8 0

3 years ago