Identify each triangle based on angles. (Acute, Obtuse or Right)please I don’t understand this

17 in long 1.3 ft wide and 8in high what is the volume

The function f(x)= -(x+5)(x+1) is down. what is the range of the function?

Which of the following are independent events? a) knowing that it is going to rain tomorrow, and bringing an umbrella to schoolb) knowing that you have to get up early tomorrow, and going to bed before 9 p.mc) knowing that it is going to rain tomorrow, and going to bed before 9 p.md) knowing that you have a test in school tomorrow, and studying thw night before