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Trava [24]
3 years ago
8

David bought a poster for an art project. The poster is 2.7 ft wide and 3.9 ft tall. What is the area of the poster? Enter your

answer as a DECIMAL in the box.

Mathematics
2 answers:
Anarel [89]3 years ago
5 0
10.53 is the answer. Just multiply the two numbers.
Nadusha1986 [10]3 years ago
5 0

Answer: The area of the poster is 10.53 sq. ft.

Step-by-step explanation:  Given that the poster that David bought for an art project is 2.7 ft wide and 3.9 ft tall.

We are to find the area of the poster.

A picture of the poster ABCD is shown in the attached figure. The poster is always in the form of a rectangle with length as its height.

Given,

length of the poster, l = BC = 3.9 ft,

and

width of the poster, w, CD = 2.7 ft.

Therefore, the area of the poster will be

A=BC \times CD=l\times w=3.9\times 2.7=10.53~\textup{sq. ft.}

Thus, the area of the poster is 10.53 sq. ft.

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According to the College Board website, the scores on the math part of the SAT (SAT-M) in a recent year had a mean of 507 and st
Leviafan [203]

Answer:

The actual SAT-M score marking the 98th percentile is 735.

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 = 507, \sigma = 111

Find the actual SAT-M score marking the 98th percentile

This is X when Z has a pvalue of 0.98. So it is X when Z = 2.054. So

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

2.054 = \frac{X - 507}{111}

X - 507 = 2.054*111

X = 735

8 0
3 years ago
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alina1380 [7]

Answer:

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3 years ago
Solve and show your work for each question.
Harlamova29_29 [7]

Answer:

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Step-by-step explanation:

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45/5=9

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You get 9/20, and this is in simplest form.

4 0
3 years ago
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hoa [83]

Answer:

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Step-by-step explanation:

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3 years ago
Which expression represents the statement below:
ikadub [295]

Answer:

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Step-by-step explanation:

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7 0
3 years ago
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