assume the following is a true statement: If it is raining, I will carry an umbrella. Which form of the original statement must also be true? A: converse B: inverse C: contrapositive D: biconditional d
HI!!
that would be the "contrapositive" the contrapositive of "if P then Q" is "if not Q then not P"
oh you were not asked for the statement, just the form so i gave you a direct answer so sue me
thank you can you help me with a few more? @misty1212
@misty1212 That's 1000 lashes
write the following reversible statement as a biconditional if two perpendicular lines intersect, the form four 90* angles. A: two intersecting lines are perpendicular if and only if they form four 90* B: two intersecting, perpendicular lines do not form four angles C: four 90* angles are formed by intersecting lines D: perpendicular lines do not intersect.
ouch
hint "bi-conditional" is "if and only if" don't really know another way to say it
so its not a
?
no, it IS A since that is the one that says "if and only if"
purple ! \[\huge \color\purple\heartsuit\]
so what does the question mean when it says reversible
to reverse "if P then Q" means (i think) to make it "if Q then P"
if it 5, then i drink beer if i am drinking beer, then it is 5
oh just switch it. do u have time to help with like one or two more? @misty1212
sure lets knock them out (if i can)
okayy thank you
which reason justifies the statement that <DAB is 100*|dw:1452102330074:dw|
sorry got logged out
ot so good at geometry but since DC is a line, \[A+80=180\]
i guess i should say 80+DAB = 180
A: <DAB and <EAD are supplementary B: <DAB and <EAD are complementary C: <DAB =<EAD (the equal sign has a wavy line above it) D: <DAB T <EAD (the T is upside down)
hmm
i always forget "supplementary " vs "complimentary" lets look it up
Two Angles are Complementary when they add up to 90 degrees (a Right Angle). They don't have to be next to each other, just so long as the total is 90 degrees.
ok then we need the "supplementary" one since they add up to 180 and 180 - 80 = 100
i gotta run, ttyl
okay thank you so much!
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