Explanation:
Add 4/3 to both sides and then do cross multiplying
A rift valley<span> is </span>formed<span> on a divergent plate boundary, a crustal extension, a spreading apart of the surface, which is subsequently further deepened by the forces of erosion.</span>
Explanation:
mean = sum of the numbers over the total numbers
mean = 2+5+4+1+8/5
mean =20/5
mean=4