Given: quadrilateral abcd is inscribed in circle o. prove: m∠a+m∠c=180° a quadrilateral is inscribed in a circle o. the vertices of the quadrilateral lie on the edge of the circle and are labeled as a, b, c, and d. drag an expression or phrase to each box to complete the proof. statements reasons quadrilateral abcd is inscribed in circle o. given inscribed angle theorem mdab=2(m∠c) mbcd+mdab=360° the sum of arcs that make a circle is 360°. substitution property m∠a+m∠c=180°

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

Which best explains why this triangle is or is not a right triangle ?

Graph the system of equations on your graph paper to answer the question. {y=−x+4y=x−2 what is the solution for the system of equations? enter your answer in the boxes.