Answer:
11. Classification on basis of angles -<em> </em><em><u> </u></em><em><u>Acute</u></em><em><u> </u></em><em><u>angled</u></em><em><u> </u></em><em><u>triangle</u></em><em><u> </u></em>
Classification on basis of sides - <em><u>Isosceles</u></em><em><u> </u></em><em><u>triangle</u></em><em><u> </u></em>
12. Classification on basis of angles - <em><u>Right</u></em><em><u> </u></em><em><u>angled</u></em><em><u> </u></em><em><u>triangle</u></em><em><u>. </u></em>
Classification on basis of sides - <em><u>Scalene</u></em><em><u> </u></em><em><u>triangle</u></em><em><u> </u></em>
13. Classification on basis of angles - <em><u>Obtuse</u></em><em><u> </u></em><em><u>angled</u></em><em><u> </u></em><em><u>triangle</u></em><em><u>. </u></em>
Classification on basis of sides - <em><u>Isosceles</u></em><em><u> </u></em><em><u>triangle</u></em><em><u>. </u></em>
Answer:
10) 44° (nearest degree)
11) 136.6 units² (nearest tenth)
12) 47.8 units² (nearest tenth)
Step-by-step explanation:
Please see the attached pictures for the full solution.
(x - 3)(x + 3)²
(x - 3)(x + 3)(x + 3)
(x(x + 3) - 3(x + 3))(x + 3)
(x(x) + x(3) - 3(x) - 3(3))(x + 3)
(x² + 3x - 3x - 9)(x + 3)
(x² - 9)(x + 3)
x²(x + 3) - 9(x + 3)
x²(x) + x²(3) - 9(x) - 9(3)
x³ + 3x² - 9x - 27
The answer is 2.