Answer:
98
Step-by-step explanation:
for a 4 sided polygon you can only draw one diagonal from one vertex so it forms 2 triangles.
For 5 sides you get 3 triangles
For 6 sides - 4
For 7 sides - 5
For 8 sides - 6
Looks like we get 2 less triangles than the number of sides in the polygon
Answer for 100 sides is 98 triangles.
Answer:
82.4
Step-by-step explanation:
divide 51/13, multiply that result by 21.
Answer:
170 cm^2.
Step-by-step explanation:
This consists of 3 rectangles of same area and 2 triangles of the same area.
= 3 * 10 * 5 + 2 * 1/2 * 5 * 4
= 150 + 20
= 170 cm^2.
Answer:
1) y=18
2)y=-0.18
Step-by-step explanation:
1) y-15=3. Add 15 on both sides.
y=18
2)-2.1+5y=-3. Add 2.1 on both sides
5y=-0.9. Divide 5 on both sides
y=-0.18
The correct answer is B, hope this helps
