The answer is .90º + 90º = 180º, <span>.90º is not an obtuse angle</span>
Answer:
v=48
Step-by-step explanation:

Answer:

Step-by-step explanation:

Expand the brackets.

Add -9x and 5x

Add 4x and 6x on both sides.

Add the like terms.

Divide 12 into both sides.


Answer: Yes
Step-by-step explanation:
1. Substitute 1 for x
2. 6 times 1 is 6 plus 2 is 8
3.8 is equal to or greater than 8
5x^2 - (2x - 3)^2 =
5x^2 - ((2x - 3)(2x - 3)) =
5x^2 - (4x^2 - 6x - 6x + 9) =
5x^2 - (4x^2 - 12x + 9) =
5x^2 - 4x^2 + 12x - 9 =
x^2 + 12x - 9 <===