What is the error in each sentence? re-write the sentences correctly and explain the error in each sentence. ( i know how to rewrite it but why is the original sentences wrong? ) yo nadar- yo nado ellos cantamos- ellos cantan yo cantas- yo canto

The first original sentence is wrong because nadar is swimming and it would be Nadia which would be swim unless the sentence was for example vamos a nadar that will be let’s go swimming. the second sentence is wrong because cantamos is sing together and cantan is sing just like they sing. The last sentence because I cantas that is like saying you sing but it’s actually yo canto which is I sing.

These objects represent mayan numerals. just like roman numerals, they are combined to symbolize a numeral and this enabled astronomers, scholars and architects to compute various equations yet it was also used by farmers and traders in their day to day transactions.

This is not enough information. what exactly is your question