Which biconditional statement is not true? a)two lines are perpendicular if and only if they intersect to form right angles. b)a triangle is a right triangle if and only if the lengths of its sides are related by the equation a2+b2=c2. c)a quadrilateral is a rectangle if and only if it has exactly four right angles. d)a triangle is equilateral if and only if it has three sides

Of four agents alpha, beta, gamma anddelta, three have to be sent together on amission. if alpha and beta cannot gotogether, beta and gamma cannot go togetherand gamma and delta cannot go together,then which of the following holds? 1. any three agents can be sent.2. alpha, delta and any one out of beta andv gamma can be sent.3. beta, gamma and any one out of alphaand delta can be sent.4. the mission is impossible.

Time's up got my coins up, my bars up, soon we find 'em we gon' slide 'em, we lined 'em, straight reclined 'em pistol grip, i got all kinds of, i'm not your driver shot gon' hit him, he won't answer, i'm blowin’ ganja so much work, they call me old school, i remind ya that bisshhh you think you got is not you, where you find her? she a kickstand, a big fan, i get behind her then i slid it in, i win, i win, ayy

Ben is interested in using a source that provides original research, current and developing trends and experts within specific fields. which source should he use?