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krek1111 [17]
3 years ago
13

Can 513 seats be divided into a equal section

Mathematics
2 answers:
jek_recluse [69]3 years ago
6 0
Yes what the other person said
Likurg_2 [28]3 years ago
3 0
Yes 513 could be divided into 3 equal sections. 513÷3=171
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If the mean of a normally distributed population is -10 with a standard deviation of 2, what is the likelihood of obtaining a va
ira [324]

Answer:

93.32% probability of obtaining a value less than or equal to -7.

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 = -10, \sigma = 2

What is the likelihood of obtaining a value less than or equal to -7?

This is the pvalue of Z when X = -7.

So

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

Z = \frac{-7 -(-10)}{2}

Z = \frac{3}{2}

Z = 1.5

Z = 1.5 has a pvalue of 0.9332.

So there is a 93.32% probability of obtaining a value less than or equal to -7.

6 0
3 years ago
Reflexive property of equality: 3x-1=
kkurt [141]
3x - 1 = 3x -1 because it's reflecting itself
7 0
3 years ago
What is the volume of the cylinder below?
Lera25 [3.4K]

Answer: The answer is 972.

Step-by-step explanation: The formula for the volume if a cylinder is πr2h and the radius is 9 and to the second power is 81. So then the radius multiplied by the height (which is 12) is 972 which is the answer.

6 0
3 years ago
What's 7⁄8 as a decimal? A. 8.7 B. .875 C. .78 D. 7.8
LuckyWell [14K]
7/8 is equal to 0.875
3 0
4 years ago
Read 2 more answers
Use the parabola tool to graph the quadratic function f(x)=−5x2−2.
alexira [117]

\text{Consider the quadratic function}\\
\\
f(x)=-5x^2-2\\
\\
\text{For a quadratic equation, }f(x)=ax^2+bx+c, \text{ we know that the x-coordinate}\\
\text{of the vertex (h,k) is given by}\\
\\
h=\frac{-b}{2a}\\
\\
\text{on comparing the given equation with standard equation, we have}

a=-5, b=0, c=-2\\
\\
\text{so the x-coordinate of the vertex is }\\
\\
h=-\frac{b}{2a}=-\frac{0}{2(-5)}=0\\
\\
\text{so plug this vlaue of the h in the given function to get the y-coordinate}\\
\text{of the vertex. so}\\
\\
f(x)=-5(0)^2-2=0-2=-2\\
\\
\text{hence the vertex of the parabola is: }(h,k)=(0,\ -2)\\
\\
\text{A second point on the graph can be found by putting x=1, so }\\
\\
f(1)=-5(1)^2-2=-5-2=-7\\
\\
\text{so one other point on the parabola is }(1,-7)

The grpah of the quadratic function is shown below:


5 0
4 years ago
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