Which best describes the transformation? Triangle ABC was transformed using the rule (x, y) - (y
x). The vertices of the triangles are shown.
A(-1, 1) A (-1, -1)
B (1,1) B'(-1, 1)
C (1,4) C (4,1)
The transformation was a 90° rotation about the origin.
O The transformation was a 180° rotation about the origin.
O The transformation was a 270° rotation about the origin.
O The transformation was a 360° rotation about the origin.

An electronics manufacturer wants to know if customers would be interested in a detachable keyboard for their tables and if so, what the most important features would be. the manufacturer partners with an electronics store to include copies of the survey with every purchase at that store for one week. which of the following best explains why this random sample is unlikely to be a good representative sample of tablet owners' preferences for a detachable keyboard? a) one week is likely not enough time to get a large enough sample. b) most people won't bother to send in the survey, which is likely to skew the results c) there is no way to verify whether the responders to the survey actually own a tablet d) the survey is biased because it was conducted through an electronics store, not the general population

Me! #1 write an equation for the interior angles of this triangle that uses the triangle sum theorem. #2 what is the value of x? #3 what is the measure of #4 classify the triangle above as acute, obtuse, or right. state your reason in a complete sentence.

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7