Which number is not a solution to the inequality below? x<15
A -6
B -2
C 11
D 17 please help me thank you!!

How many triangles can be drawn with side lengths 4 centimeters, 4.5 centimeters, and 9 centimeters? explain

Atheater wants to build movable steps that they can use to go on and off the stage. they want the steps to have enough space inside so they can also be used to store props. how much space is inside the steps?

The area of square garden is 300m squared. how long is the diagonal?