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Katen [24]
3 years ago
13

Help! I need help please

Mathematics
2 answers:
fgiga [73]3 years ago
8 0

Answer:

Q=160

Step-by-step explanation:

supplementary meant it adds to 180 degrees

180-30=160

Temka [501]3 years ago
7 0

Q is 150. Supplementary angles must add to equal 180

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Thickness measurement ancient prehistoric Native American Pot Shards discovered in Hopi Village are approximately normally distr
beks73 [17]

Answer:

a) P(X

And we can find this probability using the normal standard table and we got:

P(z

b) P(X>7)=P(\frac{X-\mu}{\sigma}>\frac{7-\mu}{\sigma})=P(Z>\frac{7-5.1}{0.9})=P(z>2.11)

And we can find this probability using the complement rule and the  normal standard table and we got:

P(z>2.11)=1-P(Z

Step-by-step explanation:

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".  

Solution to the problem

Let X the random variable that represent the variable of interest of a population, and for this case we know the distribution for X is given by:

X \sim N(5.1,0.9)  

Where \mu=5.1 and \sigma=0.9

Part a

We are interested on this probability

P(X

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

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

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

P(X

And we can find this probability using the normal standard table and we got:

P(z

Part b

We are interested on this probability

P(X>7)

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

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

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

P(X>7)=P(\frac{X-\mu}{\sigma}>\frac{7-\mu}{\sigma})=P(Z>\frac{7-5.1}{0.9})=P(z>2.11)

And we can find this probability using the complement rule and the  normal standard table and we got:

P(z>2.11)=1-P(Z

4 0
3 years ago
Is 7/10 of water in your body more than half of your body
Alchen [17]
Yesssssss according to my sister who studies medicine lol
6 0
3 years ago
Read 2 more answers
Name: Kadence Eling Date: 21-15-22 Hr. 1st Use a diagram to solve each of the problems below, marks English test had 90 question
FrozenT [24]

Answer:80%

Step-by-step explanation:

18/90 × 100%

=20%

he got 20% of the questions wrong

100% - 20% =80%

=>he got 80% of the questions correct

4 0
2 years ago
ASAP! I'll mark you as Branliest! Gina plotted the points (-3,4), (4,4), (-3,-2), and (4,-2), on the coordinate plane.
neonofarm [45]

Answer:

7

7

the reson why is becuase the length and width are equal

Step-by-step explanation:

8 0
3 years ago
Can u help me I don't get it
Elina [12.6K]
Equivalent fractions can you help add or subtract because it can be easier to simplify.


hope that helped
6 0
3 years ago
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