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Makovka662 [10]
3 years ago
11

HELPPPPP I NEED THE CORRECT ANSWERS ASAP

Mathematics
2 answers:
vovikov84 [41]3 years ago
8 0

Area of a square = side^2

In our problem,

One side of the larger square = 12ft

one side of the smaller square = 9ft

12ft^2 - 9ft^2

144ft^2 - 81ft^2 = 63ft^2

C is the correct answer choice.

Diano4ka-milaya [45]3 years ago
3 0

63 ft

the area of her floor is 144 (12 × 12)

the area of the rug is 81 (9 × 9)

144 - 81 = 63

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Each contestant in the Hunger Games must be trained to compete. Suppose that the time it takes to train a contestant has mean 5
LiRa [457]

Answer:

11.51% probability that it will take less than 450 days to train all the contestants.

Step-by-step explanation:

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

Normal probability distribution

When the distribution is normal, we use 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.

For the sum of n variables, the mean is \mu*n and the standard deviation is s = \sigma\sqrt{n}

In this question:

n = 100, \mu = 100*5 = 500, s = 4\sqrt{100} = 40

Approximate the probability that it will take less than 450 days to train all the contestants.

This is the pvalue of Z when X = 450.

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

By the Central Limit Theorem

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

Z = \frac{450 - 500}{40}

Z = -1.2

Z = -1.2 has a pvalue of 0.1151

11.51% probability that it will take less than 450 days to train all the contestants.

8 0
3 years ago
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vovangra [49]
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V=Bh
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So to solve this problem, all you have to do is mutiply 44 square cm by 22 cm.
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4 0
3 years ago
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Hunter-Best [27]

Answer:

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Step-by-step explanation:

please first take square and then division

3 0
3 years ago
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vova2212 [387]
f(x)= -2 (x - 2) ( x - 4)

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Answer:

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Step-by-step explanation:

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