Answer:


Step-by-step explanation:
Given
A circular ring
Required
The length
Let
the radius of the ring
The length is calculated by calculating the circumference of the ring.
This is calculated using:

or

Where
diameter
and 
The slope m of a line
through points

and

is given by :<span>

Thus, the slope of the line passing through points </span><span>(−1, 7) and (2, 10) is
</span>

<span>
The equation of a line with slope m passing through a point P(a, b) is given by
(y-b)=m(x-a).
We can consider any of the points (-1, 7), or (2, 10). Let's choose (2, 10):
y-10=1(x-2)
y-10=x-2
y-x=-2+10
y-x=8
Answer: </span><span>C. −x+y=8</span>
Answer:
a shift 5 units to the left, and then a shift 3 units up.
<h2>
Mass conversion</h2>
<em>Mass is the amount of matter that a body possesses and its unit in the </em><em>international system</em><em> of units is the</em><em> kilogram.</em>
<h3>How many kilograms is 2 pounds?</h3>
- <em>Knowing that </em><em>1 pound is 2.205 kilograms.</em>
<h3><em>
Therefore ⇒ 2 lb * 1 kg / 2.205 lb = 0.907 kg</em></h3>
<em />
Answer: In 2 pounds there are 0.907 kilograms.