If you are adding the same number in a sequence, then it is arithmetic. If you are multiplying by the same number, it is geometric. Since here you are adding the same number (4), it means that the series <span>1 + 5 + 9 + 13 + 17 + . . </span><span>is arithmetic. </span>
Answer:
she hiked 3.75 miles
Step-by-step explanation:
if the figure is a rectangle the answer is 473
There is actually a cool trick to this. When you see a and 2a, in this case 6 and 12, then the small triangle is a 60-30-90 triangle. The remaining side is

.
This value rounds down to 10, and yep, you guessed it, another 30-60-90.
This time, x =

.
This is a very difficult problem and requires knowledge of the special triangles. Hope this helps!