How many of the students correctly apply only associative property to rewrite the expression

not sure

Only one student, Melinda used it right.

Step-by-step explanation:

Associative property lets us place our brackets the way we want and the result would be unchanged.

Here: (13 + 15 + 20) + (20 + 47 + 18).

So, we can place the brackets in any form, like (13 + 15) + (20 + 20) + (47 + 18).

There are many ways to do it. Melinda's was is yet another example.

Note that Associative property does not hold for subtraction.

found it xd it ok yt

part d

step-by-step explanation:

theresa talked her parents into getting sd cards for her phone and her brother’s phone. inserting an sd card into a phone gives it more storage. they both get 8-gigabyte sd cards. how many bits of storage come with each sd card? type your answer in both scientific and standard notation.