Answer:
31 terms.
Step-by-step explanation:
218 = 8 + (n-1)7
210 = (n-1)7
30 + n-1
n = 31
There would be 31 terms in the given AP.
It's called an obtuse angle.
B, 2 5/8.
2 and 5/8 times itself is 5 1/4, meaning its half of 5 1/4.
Since it is a square, the diagonals are congruent. If a square is split like this, it becomes two congruent right triangles. The relationship between the sides and hypotenuse is a 1:
ratio. So if the diagonal of a square is 14 cm, then the side length would be 14/
, which is approximately 9.899. I don't understand what the answer choices are, but you should be able to square root the numbers to determine the answer.