Unfortunately he is incorrect. He made a common error, but an error is an error. If the scale factor from A to B is 3 then the lengths of B will be 3 times longer than A making them 15 and 21. Instead this instructor applied a scale factor of one-third making the lengths one-third as long. The ratio he needed was "length of B over length of A" which produces the enlarging Scale Factor of 3. Also known as the ratio of "new length to old length".
Unfortunately he is incorrect. He made a common error, but an error is an error. If the scale factor from A to B is 3 then the lengths of B will be 3 times longer than A making them 15 and 21. Instead this instructor applied a scale factor of one-third making the lengths one-third as long. The ratio he needed was "length of B over length of A" which produces the enlarging Scale Factor of 3. Also known as the ratio of "new length to old length".
deannareisman 2 months ago
i know right He gave everything TWice!!
godgirlsutanya 1 year ago
i know right i gave everything TWice!!
godgirlsutanya 1 year ago
He repeated everything at least twice! I was like GET TO THE POINT!
PurpleGenie823 1 year ago