2/x-9. You must divide 2 by x first to follow the order of operations then subtract by nine.
I’m pretty sure the 2nd one is the associate property and the 3rd one is the additive inverse property
Hope this helps :)
Answer:
<u>4</u>
Step-by-step explanation:
Answer:

<em>Correct option B.</em>
Step-by-step explanation:
The diagram shows a trapezoid with a base angle of 45° and the other base angle of 90°.
We have completed the diagram to draw a perpendicular line over the base of height h=4. A triangle is formed with an angle of 45°.
Recall a right triangle with angles of 45° is isosceles, thus the base and the height are h=4. Please check the diagram below.
For that triangle, we apply Pythagora's Theorem:

Thus:


The base of the trapezoid x is h + 3 = 7
Thus:

Correct option B.
D=answer i think
If im wrong im really sorry!