1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
yan [13]
3 years ago
6

Find the surface area of the pyramid. The side lengths of the base are equal.

Mathematics
1 answer:
alexdok [17]3 years ago
8 0

Answer:

362.02

Step-by-step explanation:

You might be interested in
In parallelogram ABCD,m
yan [13]

Answer:

After that????? Please ask me the full question please.

Thank you

5 0
3 years ago
Solve the problem. Use the Central Limit Theorem.The annual precipitation amounts in a certain mountain range are normally distr
bazaltina [42]

Answer:

0.8944 = 89.44% probability that the mean annual precipitation during 25 randomly picked years will be less than 112 inches.

Step-by-step explanation:

To solve this question, we use the normal probability distribution and the central limit theorem.

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score 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 p-value, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

Mean of 109.0 inches, and a standard deviation of 12 inches.

This means that \mu = 109, \sigma = 12

Sample of 25.

This means that n = 25, s = \frac{12}{\sqrt{25}} = 2.4

What is the probability that the mean annual precipitation during 25 randomly picked years will be less than 112 inches?

This is the p-value of Z when X = 112. So

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

By the Central Limit Theorem

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

Z = \frac{112 - 109}{2.4}

Z = 1.25

Z = 1.25 has a p-value of 0.8944.

0.8944 = 89.44% probability that the mean annual precipitation during 25 randomly picked years will be less than 112 inches.

7 0
3 years ago
(CO 3) A survey indicates that shoppers spend an average of 22 minutes with a standard deviation of 8 minutes in your store and
padilas [110]

Answer: 0.60

Step-by-step explanation:

Given: Mean : \mu = 22\text{ minutes}

Standard deviation : \sigma = 8\text{ minutes}

The formula to calculate z is given by :-

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

For x= 20 minutes

z=\dfrac{22-20}{8}=0.25

The P Value =P(z

Hence, the probability that a randomly selected shopper will spend less than 20 minutes in the store= 0.60

5 0
3 years ago
What is the value of x?<br> Enter your answer in the box
Marina CMI [18]

Answer:

x = 45º

Step-by-step explanation:

well since a triangle has to equal 180º

then we just have to subtract 88º and 55º from 180º

180 - 80 - 55 = 45

therefore, x = 45

6 0
3 years ago
Give the equation of the circle centered at the origin and passing through the point (0,3)
rusak2 [61]

Answer:

The equation would be x^2 + y^2 = 9

Step-by-step explanation:

In order to find this, start with the base form of the circle.

(x - h)^2 + (y - k)^2 = r^2

Now we input the center as (h, k).

(x - 0)^2 + (y - 0)^2 = r^2

x^2 + y^2 = r^2

Now we can input the radius of 3 in for r

x^2 + y^2 = 3^2

x^2 + y^2 = 9

5 0
3 years ago
Other questions:
  • If Mei has earned 30 points right and solve a multiplication equation to find out how many books she needs to read
    13·2 answers
  • The ratio of boys to girls in a class is 4 : 5
    5·2 answers
  • There were 532 people at the Nutcracker. If admission was $24 for adults and $16 for children and $10,272 was collected, how man
    10·1 answer
  • How many times can 70 fit into 167. It is OK if it is rounded to the closest number of 167.
    12·1 answer
  • Here are the 30 best lifetime baseball batting averages of all time, arranged in order from lowest to highest:
    9·1 answer
  • Please help me please please please
    11·1 answer
  • A farmer has chickens, sheep and horses there are 154 animals and 516 total legs the number of sheep equals twice the number of
    5·1 answer
  • Please answer this asap
    5·1 answer
  • Cheryl bought a sandwith or 5 1/2 dollars and a drink for $2.60 if she paid for her meal with $10 bill,how much money did she ha
    8·1 answer
  • Which comparison is not correct?<br> 8&gt;-9<br> -7 &gt;-9<br> 10-8&lt;-4<br> -2&lt;-9
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!