Answer:
1
Step-by-step explanation:
(1/2)(2/1)=2/2=1
The plane PRS passes through the points P, R and S. So it contains the line RS. Also the plane QRS passes through the points Q, R and S. So it contains the line RS as well. Since both the planes contain the line RS, the line RS must be the intersection of plane PRS and QRS
i think the answer is -50 but im
not sure
<span>3.1415926535897932384626</span>
The formula for the triangular sequence is Xn=n(n+1)/2
So X25=25(25+1)/2=325
