Answer:
14:6,
21,9
28:12
Step-by-step explanation:
7x2=14
3x2=6
7x3=21
3x3=9
7x4=28
3x4=12
Always because <span>If two sides of one </span>triangle<span> are proportional to two sides of another and included </span>angles<span> are </span>equal<span>, then the </span>triangles<span> are </span>similar<span>. They are similar.</span>
To find the area of a quarter circle, you simply take a quarter of a full circle. As all quarters are equal, this means that the formula would be <span><span>π<span><span>r2</span>4</span></span><span>π<span><span>r2</span>4</span></span></span><span>. But wait, there's more. If you notice, </span><span><span>π<span><span>r2</span>4</span>=π<span><span>r2</span>2</span></span><span>π<span><span>r2</span>4</span>=π<span><span>r2</span>2</span></span></span><span>. This coincides with the circle formula, just with half the radius. Notice anything? A quarter of a circle can be calculated in the same way a circle a quarter the size can. This means that a quarter circle is equal to a circle a quarter size. In this same way, a ninth of a circle is equal to a circle of one ninth the size.</span>
Answer: -18
Step-by-step explanation:
It is decreasing so the now will become negative since it is same as losing some points.