Marcos added +12 + -11 and got the answer -1. What error did Marcos make?
12 + (-11) -- a positive times a negative is a negative 12 - 11 = 1
A positive times a negative is a negative. Your problem then turns into 12-11 = 1
He found the difference of the numbers instead of the sum. He divided the integers. He chose the incorrect sign for the sum. He multiplied the integers.
idk theres no numbers only this
--- those are the answer choices, lol.
12- -11=23 (A) 12/-11 = -1 (B) 12*-11=-132 (D)
so its B
He divided the integers.
He DID "choose" the incorrect sign for the sum but there's more to it than just choosing. Although 12/-11 IS -1.09090909091, It could be C
I'd say C.. but wait to see if Ganeshie8 replies
in the mean time can u help me with this one? Use the rules for operations with integers to simplify the expression. +16 × -2 -32 -8 +8 +32
I'm right here, why would you tag others? s: Are you sure it's +6 * -2?
or is it +6x(-2)?
its +6 X -2
if it's the second one, it's -32. Courtesy of wolframalpha.com
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