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
vlada-n [284]
2 years ago
7

What is special right triangles

Mathematics
2 answers:
Effectus [21]2 years ago
8 0
Have you seen this man(right) he was my best friend i miss him.

timama [110]2 years ago
3 0

Answer:

There are the only triangles with right angles

Step-by-step explanation:

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
Malik collects rare stamps and has a total of 212 stamps. He has 34 more domestic stamps than foreign stamps. Let x represent th
Effectus [21]

Answer:

y = 89 x = 123

Step-by-step explanation:

since they're both in standard form, its easier to do the process of elimination

x - y = 34

-x -y -212

------------------

-2y = -178

y = 89

now plug in y to any one of those two equations

x - y = 34

x - 89 = 34

x = 123

<em>to check:</em>

<em>x</em><em> </em><em>+</em><em> </em><em>y</em><em> </em><em>=</em><em> </em><em>2</em><em>1</em><em>2</em>

<em>1</em><em>2</em><em>3</em><em> </em><em>+</em><em> </em><em>8</em><em>9</em><em> </em><em>=</em><em> </em><em>2</em><em>1</em><em>2</em>

<em>2</em><em>1</em><em>2</em><em> </em><em>=</em><em> </em><em>2</em><em>1</em><em>2</em>

6 0
3 years ago
Will I lose points when use brainly plus to ask questions?​
dlinn [17]

Answer:

yes

hope this helps!!

6 0
2 years ago
If John makes 30dollars/hour how much will he make in a year
stich3 [128]
I... don’t know? How many hours is he working a year? How many days is he working?
5 0
3 years ago
Read 2 more answers
What is the volume of the triangular right prism?
Minchanka [31]

Answer:D

Step-by-step explanation:

5 0
2 years ago
Other questions:
  • Molly ran 2/3 of a mile in 8 minutes if molly rubs at that speed how long will it take. Her to run one mile
    10·1 answer
  • The shortest sides of two similar polygons have lengths in the ratio 2:5, the perimeter of the smaller polygon is 20, the perime
    5·1 answer
  • Write the trigonometric expression as an algebraic expression in u. cos (sin-1 u)
    6·1 answer
  • You have decided to walk in a long-distance race. There are two teams that you can join. Team A walks at a constant rate of 2.5
    9·1 answer
  • 6. Many American cars feature speedometers
    5·1 answer
  • Use inductive resoning to predict the next number 1,6,-4,1,-9,-4,-14,-9,-19
    11·1 answer
  • Help me asap!!!!!!! please!!!
    6·1 answer
  • Spinner 1 is divided into four congruent sections, and Spinner 2 is divided into three congruent sections, as shown below. Each
    13·2 answers
  • Help please and thank you
    9·2 answers
  • Atriangular sign has an area of a square feet. the width of the sign is 5 feet. which equation represents h, the height of the s
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!