Tara and Kenny are asked to clean the carpets in a building. Tara can clean all the carpets by herself in 7 hours and Kenny can clean all the capets by himself in 12 hours. How long would it take to clean the carpets if they worked together?

the entire expression should be subtracted from 30. to subtract the quantity, distribute the negative sign, which changes the signs on the terms. so, the –2 changes to positive and gets added to 30 instead of subtracted from it.

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a

b

d

step-by-step explanation:

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.