I am extremely bad at math and I am trying to help other to ask a question, but I personally think C
Answer:
B and E
Step-by-step explanation:
Hope it helps
Answer:
The answer is B.
Step-by-step explanation:
It is saying that 647.5 calories is the total amount and 320 is a part of it. so when you do 647.5-320, it becomes 327.5 and that is c. You can only do this with the equation that letter B is saying.
Answer:
2 movements
Step-by-step explanation:
In this case what we will do is name the white chips "W" and the black ones "B". If there are 9 tiles and 4 are in black then the rest, that is 5, in white, like this:
B-B-B-B-W-W-W-W-W
First movement, in turn we can flip 3 tiles, in this case we flip two blacks and one white, it would look like this:
W-W-B-B-B-W-W-W-W
The second movement is to turn the 3 black ones and thus they would all be blank
W-W-W-W-W-W-W-W-W
In other words, the smallest number of movements is 2.
- Reflection about the y-axis has rule (x,y)→(-x,y);
- Reflection about the x-axis has rule: (x,y)→(x,-y).
Consider rectangle ABCD and select, for example point A(-5,1).The set of reflections about the y-axis, x-axis, y-axis, x-axis will act on A in following way:
- about y-axis A(-5,1)→A'(5,1);
- about x-axis A'(5,1)→A''(5,-1);
- about y-axis A''(5,-1)→A'''(-5,-1);
- about x-axis A'''(-5,-1)→A(-5,1).
This reflections act on all rectangle vertices in the same way, then
the set of reflections that carry rectangle ABCD onto itself is
y-axis, x-axis, y-axis, x-axis
