Two lines in R3 are given by the vector equationsr1(t)= (t-6,2t,-3t+8c+21), r2(s)= (3s+2c, 4s+14, -6s)where t, s R, and c is a number. Find the value of c for which the two lines intersect each other, and find the point of intersection.

60: 45 =12: 9 =4: 3 so the answer is 4: 3

a mantle plume is an upwelling of abnormally hot rock within the earth's mantle. as the heads of mantle plumes can partly melt when they reach shallow depths, they are thought to be the cause of volcanic centers known as hotspots and probably also to have caused flood basalts.

step-by-step explanation:

hd extra 3-7 x d en is the answer