Answer:
D) -a² - a + 12
Step-by-step explanation:
(-a + 3)(a + 4)
= -a² - 4a + 3a + 12
= -a² - a + 12
It sounds like it’s true i don’t know tho i’m so sorry if it’s wrong
Answer:a right angle
Step-by-step explanation: The rectangle has right angles. When the angles are diagonals the angles are bisected therefore what was 90 is now 90/2=45. A triangle of any kind should equal 180 so lets check it 90+45+45=180.
It’s 131 degrees because it’s the same angle size as the other one.
