Answer:
The two lines of reflection are and
Step-by-step explanation:
I will attach a file with the graph of the rectangle and the lines of reflection.
We know that RSTU is a rectangle with vertices at , ,
and
The first step is to draw the vertices on the plane and them the rectangle.
The rectangle is a symmetrical figure. Therefore if we want to carry the rectangle onto itself using a line of reflection this line must goes through the centroid of the rectangle.
Given that we have a rectangle whose width is and its length is its centroid will be place at .
Looking at the graph and using this information we find that the two lines of reflection are and .
Answer: 2.70 g/mL
Step-by-step explanation:
Density is g/mL.
Do 40.5 g / 15.0 mL to get 2.70 g/mL.
It is important to read the question very carefully. The trick lies in the way the question is written. Once it is understood, then the problem is easy.
Number of persons required to rearrange the floor plans in 1 hour = 42
Number of persons required to rearrange the floor plans in 9 hours = 42 * 9
= 378 hours
So it will take 378 hours by 9 persons to rearrange the floor. I hope this is the answer you were looking for and the procedure is also clear to you. Once you understand the procedure, you can attempt such problems on your own in future.
Answer:
(x - 2)² + (y + 5)² = 9
Step-by-step explanation:
The equation of a circle in standard form is
(x - h)² + (y - k)² = r²
where (h, k) are the coordinates of the centre and r is the radius
Here (h, k) = (2, - 5) and r = 3, thus
(x - 2)² + (y - )- 5))² = 3², that is
(x - 2)² + (y + 5)² = 9 ← equation in standard form