Which of these is not equivalent to:

1/2 logy 64 + logo 20 - logo40

a. 2long 4
b

b. long 3 + long 2
b b

c. log 4
b

d. log 4 - log 8
b b

Show the procedure please.

What is the slope of the equation y =

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of