Find the value v of the riemann sum v=n∑k=1 f(ck)δxk

for the function f(x)=x2+4 using the partition p = { 1, 3, 5, 8 }, where ck is the left endpoints of the partition.

v = ?

2.write the sum using sigma notation:
6+9+12+15+⋯+27=a∑n=1 b , where

a= ?
b= ?

its c or d   take a lucky guess my dude

c

step-by-step explanation:

answer: c.  

step-by-step explanation:

mixtures containing substances that get attracted to magnet can be separated using a magnet. we can separate iron from a mixture of sand and iron, as only iron attracts to the magnet.

lo98765432wqasdfghjkloi87654567890

step-by-step explanation: