Answer:
Here is your answer with solutions.
Answer:
what is the unit and class
Step-by-step explanation:
The number of tiles used is 300 tiles.
According to the statement
We have given that:
The tiles are 20 cm by 30 cm. And the dark room floor is 6 meters by 3 meters.
And we have to find that the number of tiles used to prepare the dark room.
So, For this purpose we have to find the area of the room floor.
The area of the floor is 6 *3.
The area of the floor is 18 meter per square.
The area of the tile is 0.2*0.3
The area of the tile is 0.06 meter per square.
Now,
The number of tiles used is 18/0.06
The number of tiles used is 300.
So, The number of tiles used is 300 tiles.
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Answer:
![x\geq 5](https://tex.z-dn.net/?f=x%5Cgeq%205)
Step-by-step explanation:
The function that we have to study in this problem is
![y=\sqrt{x-5}-1](https://tex.z-dn.net/?f=y%3D%5Csqrt%7Bx-5%7D-1)
The domain of a function is defined as the set of all the possible values of x that the function can take.
For a square-root function, there are some limitations to the possible value of the argument in the root.
In particular, the argument of a square root must be equal or greater than zero, because the square root of a negative number is not defined.
Therefore, in this case, we have to set the following condition for the domain:
![x-5\geq 0](https://tex.z-dn.net/?f=x-5%5Cgeq%200)
And by solving, we get
![x\geq 5](https://tex.z-dn.net/?f=x%5Cgeq%205)
which means that the domain of this function is all real numbers equal or greater than 5.