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zhenek [66]
3 years ago
7

100 poiints need help asap plzz and i will give brainlest

Mathematics
2 answers:
Nitella [24]3 years ago
5 0

Answer:

Step-by-step explanation:

The area of the triangle is  = 1/2*base*height = 1/2*8*6

= 24 in2.

The area of the rectangle is = base*height = 8*4

= 32 in2.

The area of the irregular figure is  = triangle + rectangle = 24+32

= 56 in2.

Viktor [21]3 years ago
4 0

Answer:

Step-by-step explanation:

The area of the triangle is

1/2x8x6= 24 in2.

The area of the rectangle is

8x4= 32 in2.

The area of the irregular figure is

24+32= 56 in2

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A set of city temperatures in April are normally distributed with a mean of 19.7 degrees Celsius and a standard deviation of 2 d
Sati [7]

Answer:

19.77% of average city temperatures are higher than that of Cairo

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 question, we have that:

\mu = 19.7, \sigma = 2

What percentage of average city temperatures are higher than that of Cairo?

This is 1 subtracted by the pvalue of Z when X = 21.4.

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

Z = \frac{21.4 - 19.7}{2}

Z = 0.85

Z = 0.85 has a pvalue of 0.8023

1 - 0.8023 = 0.1977

19.77% of average city temperatures are higher than that of Cairo

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3 years ago
Write in Slope Intercept Form:
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Step-by-step explanation:

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The expression 4x/5 - 2x/5 is equivalent to...
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If you would like to know the equality of the expression 4 * x/5 - 2 * x/5, you can calculate this using the following steps:

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</span>
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4 years ago
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