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BabaBlast [244]
3 years ago
9

Please answer need for geometry

Mathematics
1 answer:
IrinaK [193]3 years ago
7 0

Answer:

d. 8.38 ft

Step-by-step explanation:

arc(NM) = 180° - 100° = 80° (Angles on a straight line)

Length of arc = θ/360°*2πr

θ = 80°

r = 6 ft

Plug in the values

Length of arc(NM) = 80/360*2*π*6

= 8.3775804

= 8.38 ft

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What 15 yards in feet
vaieri [72.5K]

Answer:

45

Step-by-step explanation:

1 yard= 3 feet

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2 years ago
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olchik [2.2K]

Answer:

3, 4, 7

Step-by-step explanation:

In order to solve inequalities, you want to isolate the variable.

Subtract 3 from both sides to give you (I can't put the greater than or less than or equal to with the line underneath, so just imagine that it's there)

-8 <-4r

Divide both sides by -4 to get the r by itself.

-8÷-4=2

2<r

Two is less than or equal to r, or you can word it r is greater than or equal to 2. So now you look at your options, and choose the ones that are greater than 2. 3, 4, and 7 are all greater than 2.

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3 years ago
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Yuri [45]

Answer:

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Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
The average GRE score at the University of Pennsylvania for the incoming class of 2016-2017 was 311. Assume that the standard de
vladimir1956 [14]

Answer:

P(\bar X>308)=1-0.0721=0.928

Step-by-step explanation:

1) Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Let X the random variable that represent the GRE score at the University of Pennsylvania for the incoming class of 2016-2017, and for this case we know the distribution for X is given by:

X \sim N(\mu=311,\sigma=13)  

And let \bar X represent the sample mean, the distribution for the sample mean is given by:

\bar X \sim N(\mu,\frac{\sigma}{\sqrt{n}})

On this case  \bar X \sim N(311,\frac{13}{\sqrt{40}})

2) Calculate the probability

We want this probability:

P(\bar X>308)=1-P(\bar X

The best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}

If we apply this formula to our probability we got this:

P(\bar X >308)=1-P(Z

P(\bar X>308)=1-0.0721=0.9279  and rounded would be 0.928

7 0
3 years ago
Solve: 3,204 ÷ 119<br> Show the remainder as a fraction.
weqwewe [10]

3204:119=

=26,92

=27/10

8 0
3 years ago
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