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
Anton [14]
2 years ago
9

Find the area of the trapezoid. 31 cm 25.4 cm -13.1 cm

Mathematics
2 answers:
Strike441 [17]2 years ago
4 0

Answer:

369.42

Step-by-step explanation:

A=a+b

2h=31+25.4

2·13.1≈369.42

Westkost [7]2 years ago
4 0

Answer: -10.31494 liters

Step-by-step explanation:

Area of a trapezoid is found with the formula, A=(a+b)/2 x h.rounded to the nearest tenth would be 10.3 liters.

hoped this helped.

You might be interested in
The heights of baby giraffe are normally distributed with a mean of 63.6 inches and a standard deviation of 2.5 inches. If 100 b
ANEK [815]

Answer:

P(\bar X

And we can solve this using the following z score formula:

z = \frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}

And if we use this formula we got:

z = \frac{63-63.6}{\frac{2.5}{\sqrt{100}}}= -2.4

So we can find this probability equivalently like this:

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 heights of a population, and for this case we know the distribution for X is given by:

X \sim N(63.6,2.5)  

Where \mu=63.6 and \sigma=2.5

We select n =100. Since the distribution for X is normal then we know that the distribution for the sample mean \bar X is given by:

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

We want this probability:

P(\bar X

And we can solve this using the following z score formula:

z = \frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}

And if we use this formula we got:

z = \frac{63-63.6}{\frac{2.5}{\sqrt{100}}}= -2.4

So we can find this probability equivalently like this:

P( Z

4 0
3 years ago
What are the factors of the expression below? -2x+5x-3
Ipatiy [6.2K]

Answer:

-2x-15

Step-by-step explanation:

4 0
3 years ago
2+2-2-3-87+20090 then split in half
Svetllana [295]

20002 because all of it added together and then divided by two gives you 20002.

6 0
3 years ago
Who invented the word "book?"
jarptica [38.1K]
Wow!!thats a word from the old english that made it
7 0
3 years ago
Tomas got a score of 75% correct on an exam. There were 24 questions on the exam. What number of questions did Tomas get correct
laila [671]
The answer to this problem will be D
7 0
2 years ago
Read 2 more answers
Other questions:
  • A cone has a slant height of 26 inches and a radius of 24 inches. What is the volume of the cone?
    8·2 answers
  • Caitlin has a movie rental card worth $175.After she rents the first movie ,the card's value is $172.25. Aftershe rents the seco
    11·1 answer
  • ABC is similar to JKL
    10·2 answers
  • Is the graph increasing decreasing or constant?
    10·1 answer
  • Henry's wage is £450 per week.
    13·1 answer
  • What integer is equivalent to 9^3/2
    15·1 answer
  • What are the coordinates of Point W?
    14·2 answers
  • What is 21.75+3.5 tell meeee
    15·2 answers
  • Find the value of x in the following figure
    13·1 answer
  • Calculate the bearing of Y from X.<br> N.<br> Z<br> Y<br> X<br> 102°<br> Not drawn accurately
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!