am i missing $45?

original amount=$1200 i have spent $291 from that amount. when i subtract 291 from 1200 i get $909. i count the money i have in my safe and it equals $834. 909-834=75. Am i missing $75 dollars from... more

How do I replicate this teams of DNA? ATTCGGCAAG?

Super confused 


how do you do this problem 8x-5+2x

I need to simplify the expression  


Mrs Smith had 3/5 kg of sugar. She used 1/4 to make cookies. How much sugar did she use to make cookies?

My question is a Singapore math word problem and I am not sure how to solve the fraction. 

Can a guy get either x from their mother

Can a guy get either x from their mother xx or both x combined into one x then passed to their son

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