Annie tried to solve an equation step by step. 7.5 + k = 10 7.5 + k − 7.5 = 10 − 7.5 Step 1 k = 2.5 Step 2 7.5+k 7.5+k−7.5 k =10 =10−7.5 =2.5 Step 1 Step 2 Find Annie's mistake.

Step-by-step explanation:

Annie's mistake is in the second step.

He introduced "k7.5" & "-7.5k" which made him confuse and led him to delete "k", thereby omitting the variable being sort after

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a line is an defined derm because it

a)contains an infinite number of points b) can be used to create other geometric shapes c)describes something that does not have width or depth d) is a term that does not have a formal definition. a line is an undefined term because it: contains an infinite number of points.