the last one because 7*3=21 14*3=42 and 21*3=63
7 is the answer. hope this helps!
Answer:
1. 1/4
2. -3
3. 3
4. -3/2
5. -2
6. -3/4
Step-by-step explanation:
We know that
<span>The nine radii of a regular Nonagon divides into 9 congruent isosceles triangles
</span>therefore
[the area of <span>a regular nonagon]=9*[area of isosceles triangle]
</span>[area of isosceles triangle]=b*h/2------> 15*20.6/2----> 154.5 cm²
so
[the area of a regular nonagon]=9*[154.5]------> 1390.5 cm²
the answer is
1390.5 cm²
Y=-3x+2 bc the line is going down so it’s negative and the y intercept is 2
