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3 years ago

Help, middle school homework

Mathematics

1 answer:

Vesna [10]3 years ago

5 0

The answer is 180°

Angles between straight lines are 180°

Hope this helps :))

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Solve the trigonometric equation for all values 0 ≤ x < 2π.

Vanyuwa [196]

Not really sure but hope this helps

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3 years ago

Select True or False for each statement.

Alinara [238K]

Answer:1. true and 2.true

Step-by-step explanation:

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3 years ago

The weights of adult male birds of a certain species are normally distributed with a mean of 27.5 grams and a standard deviation

Korvikt [17]

Answer:

The z-score of a male bird of this species with a weight of 29.37 grams is 1.7.

Step-by-step explanation:

We are given that the weights of adult male birds of a certain species are normally distributed with a mean of 27.5 grams and a standard deviation of 1.1 grams.

Let X = weights of adult male birds of a certain species

So, X ~ Normal( $\mu=27.5,\sigma^{2} =1.1^{2}$ )

The z score probability distribution for normal distribution is given by;

Z = $\frac{ X-\mu}{\sigma } }$ ~ N(0,1)

where, $\mu$ = population mean weight = 27.5 grams

$\sigma$ = standard deviation = 1.1 grams

The Z-score measures how many standard deviations the measure is away from the mean. After finding the Z-score, we look at the z-score table and find the p-value (area) 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.

SO, the z-score of a male bird of this species with a weight of 29.37 grams is given by;

Z score = $\frac{ X-\mu}{\sigma } }$ = $\frac{ 29.37-27.5}{1.1 } }$

= 1.7

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3 years ago

Which are equivalent to 2 1/3 x 3/14? Check all that apply.

Usimov [2.4K]

I think is 1/2 sorry if I’m wrong

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3 years ago

Question 5 of 10

Mashcka [7]

Answer:

B. -8

Step-by-step explanation:

F(x) = 2x

F(-4) = 2(-4) = -8

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3 years ago