It would be 8.66
Hope this helped!
Answer:
The correct answer is option:
D) ΔABC and ΔA″B″C″ are congruent triangles.
Step-by-step explanation:
<u>Given</u>
- ΔABC is first rotated about the origin by 270° to form the triangle A′B′C′.
- is then translated upwards 10 units to form
<u>To find:</u> The true statement among the given options.
<u>Solution:</u>
Let the triangle be situated in 1st quadrant.
It is rotated about the origin by .
Now, it moves towards quadrant 2 if it is rotated clockwise. It is termed as
.
It is given that now it is translated 10 units upwards. i.e. 10 units added to x coordinate of each vertex to form .
Now, we can see that there is no change in the dimensions of the triangle. We are just changing the location of the triangle.
So, all its angles will be equal to each other and all the sides will be equal to each other.
i.e.
Hence, the correct option is:
D)ΔABC and ΔA″B″C″ are congruent triangles.
Answer:
A parameter is a numerical measurement describing data from a population. A statistic is a numerical measurement describing data from a sample
Step-by-step explanation:
In statistics we have to deal with populations and samples to carry out our studies. A population is a large group under consideration and the elements or members of the population have some common features or attributes. For example, all the school going kids in a certain town will be considered a population. Sample on the other hand is a subset(a part) of the population. For example, all school going kids in the town aged 5-6 years will be considered a sample.
The term Parameter and Statistic are very similar as they represent some numeric description. Parameter represents the data of the entire population, while statistic represents that data of a sample. An easy way to remember this is to match the initials i.e. Parameter for Population and Statistic for Sample.
Considering this, we can say the correct answer is:
A parameter is a numerical measurement describing data from a population. A statistic is a numerical measurement describing data from a sample
See the attached image for solution
answer is zero