Answer:
is it a SAT or any other subject question as I am not able to understand.
being a student who is preparing for SAT, it is my curiosity that has peaked so please regard my question.
<h3>Answer:</h3>
AC ∈ {4, 5, 6, 7}
<h3>Explanation:</h3>
When two sides of a triangle are specified, the allowable values for the length of the third side are between the sum and difference of the given sides.
In ∆ACD, sides DA and CD are both given as length 4. Thus the possible range of values for side AC is 0 – 8. The extremes of this range result in ∆ACD having zero area, so we assume they are not of interest.
In ∆ACB, sides AB and BC are given as having lengths 3 and 6. Thus the possible range of values for side AC is 3 – 9. The extremes of this range result in ∆ACB having zero area, so we assume they are not of interest.
The integers that are in both ranges and that give triangles with non-zero area are ...
... AC ∈ {4, 5, 6, 7}
Yellow lines means that roads are merging and there's going to be traffic coming, so it's a warning to be cautious and to join the merged road. It's usually a warning to people that are going at a high speed in their vehicle. So merging majorly helps prevent an accident.
Answer:
Explanation:
This is not a nice question. On the surface, it looks like C and D are both correct.
Coming back to the starting point makes the displacement = 0. That means that the velocity is also 0.
On the other hand, the total displacement when going in a circle can also be zero.
To me the best answer is probably D, but I wouldn't be surprised if the poser of the question thinks it is C. I would answer D but hold your nose when you do it.
