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3 years ago

Plzzzzzzzzzzzzzzzzzz help me on dis

Mathematics

1 answer:

emmainna [20.7K]3 years ago

6 0

Answer:

The answer is C if you just add them all up together

Step-by-step explanation:

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How do you turn a positive number like 52 into a decimal?

maksim [4K]

Answer:52.0

Step-by-step explanation:you just add a decimal then a 0 because it is a whole number

5 0

3 years ago

Read 2 more answers

If IQ scores are normally distributed with a mean of 100 and a standard deviation of 15, what is the mean IQ score after the sco

lianna [129]

Answer:

$\mu = 0 , \sigma=1$

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Solution to the problem

Let X the random variable that represent the IQ scores of a population, and for this case we know the distribution for X is given by:

$X \sim N(100,15)$

Where $\mu=100$ and $\sigma=15$

If we standardize the variable with the z score given by:

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

We got a normal standard distribution with parameters $Z\sim N (0,1)$

$\mu = 0 , \sigma=1$

4 0

4 years ago

Which expressions are equivalent to the expression 7(5 + m) - 8?

Akimi4 [234]

Answer:

27 + 7m

Step-by-step explanation:

$7(5 + m) - 8$

open the bracket:

$= 35 + 7m - 8 \\ = 27 + 7m$

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3 years ago

Is there a relationship between the distance and the sum? Is there a relationship between the distance and the difference?

Lerok [7]

Answer:

no idea

Step-by-step explanation:

but God bless you my boi

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2 years ago

Round to the nearest tenth: 6.752

Talja [164]

Answer:

6.8

Step-by-step explanation:

To round 6.752 to the nearest tenth consider the hundredths’ value of 6.752, which is 5 and equal or more than 5. Therefore, the tenths value of 6.752 increases by 1 to 8.

6 0

2 years ago