An 8th grade class traveled 110 km and the bus was going 55 km/hr. How long did it take?

2.0 hr
0.5 hr
55 hr
6050 hr

The center of the circumscribed circle lies on line segment and the longest side of the triangle is equal to the of the circle.

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.