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MrRa [10]
3 years ago
5

Find the value of x. if necessary round to the nearest tenth. a=27 sq in

Mathematics
1 answer:
leva [86]3 years ago
6 0
Do you mean X is A.

BTW did you get the question from Khan Academy.
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Katyanochek1 [597]

Answer:

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Step-by-step explanation:

there are people going around typing this link it guves your phone a virus

6 0
2 years ago
Find the slope of a line that is perpendicular to a line that passes through the points (7,1) and (-14,4)
d1i1m1o1n [39]
The slope of the line is -1/7, so the perpendicular line has a slope of 7
7 0
3 years ago
5x+14<4 or -2(x-8)<-2
Kitty [74]

Answer:

Step-by-step explanation:

5x+14<4 or -2(x-8)<-2

    -14 -14      -2x+16<-2

5x<-10                -16  -16

÷5  ÷5           -2x<-18

x<-2              ÷-2   ÷-2

                     x>9   (sign changes because you divide by a negative number)

x<-2 or x>9

7 0
3 years ago
The exam scores for 200 students are normally distributed with a mean of 72 and a standard deviation of 10. Which answer choice
Paha777 [63]

Using the normal distribution, it is found that there are 68 students with scores between 72 and 82.

<h3>Normal Probability Distribution</h3>

The z-score of a measure X of a normally distributed variable with mean \mu and standard deviation \sigma is given by:

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

  • The z-score measures how many standard deviations the measure is above or below the mean.
  • Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

In this problem, the mean and the standard deviation are given, respectively, by:

\mu = 72, \sigma = 10

The proportion of students with scores between 72 and 82 is the <u>p-value of Z when X = 82 subtracted by the p-value of Z when X = 72</u>.

X = 82:

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

Z = \frac{82 - 72}{10}

Z = 1

Z = 1 has a p-value of 0.84.

X = 72:

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

Z = \frac{72 - 72}{10}

Z = 0

Z = 0 has a p-value of 0.5.

0.84 - 0.5 = 0.34.

Out of 200 students, the number is given by:

0.34 x 200 = 68 students with scores between 72 and 82.

More can be learned about the normal distribution at brainly.com/question/24663213

#SPJ1

6 0
2 years ago
Which inequality does this graph represent?
sp2606 [1]

Yea the Answer is B: 3y - 6x > -6

I used Desmos (Graphing Calculator)

5 0
3 years ago
Read 2 more answers
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