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2 years ago

Please help and I give brainlest

Mathematics

2 answers:

3241004551 [841]2 years ago

3 0

Answer:

1/8 for each friend.

Step-by-step explanation:

1/8 + 1/8 + 1/8 + 1/8 = 1/2

spin [16.1K]2 years ago

3 0

Answer:

Umm i dont know if this is the right answer but its saying what fraction will the 4 friends get if they shared the pizza whole. So i just took 1/2 and mult. it by 2 to get 3/3 but i am not to sure on this one.

Step-by-step explanation:

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2 years ago

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Common ratio of 135,45, 15, 5,

olchik [2.2K]

9514 1404 393

Answer:

1/3

Step-by-step explanation:

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5/15 = 1/3

4 0

2 years ago

A rectangle has a width of 4.9 cm and an area of 81.9 cm².

Drupady [299]

16cm

Dividing 81.9 cm^2 by 4.9cm will give you about a 16 cm height.

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2 years ago

Yaro buys a baseball cap for $9.50. He also buys a new baseball. Yaro speads $13.50 altogether.

VMariaS [17]

Answer:

13.5 = 9.5 + x

x=4

Step-by-step explanation:

In this problem, the price of the baseball cap, which is $9.50, and a baseball, whose price is unknown (and therefore must be the variable), total $13.50. So, to set up the equation add the two prices and set them equal to the total, 9.5+x=13.5.

Then, using the subtraction property of equality subtract 9.5 from both sides. This means x=4, so the baseball cost 4 dollars.

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2 years ago

If IQ scores are normally distributed with a mean of 100 and a standard deviation of 5, what is the probability that a person se

notsponge [240]

Answer:

2.28% probability that a person selected at random will have an IQ of 110 or higher

Step-by-step explanation:

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.

In this problem, we have that:

$\mu = 100, \sigma = 5$

What is the probability that a person selected at random will have an IQ of 110 or higher?

This is 1 subtracted by the pvalue of Z when X = 110. So

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

$Z = \frac{110 - 100}{5}$

$Z = 2$

$Z = 2$ has a pvalue of 0.0228

2.28% probability that a person selected at random will have an IQ of 110 or higher

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2 years ago