Posted by Dawn on Monday, October 4, 2010 at 4:57pm.
-1 divided by -7/2? I tried this on my calculator and got a demical, my teacher want's it in fraction form though.
- Math - Reiny, Monday, October 4, 2010 at 5:01pm
-1 ÷ (-7/2)
= -1 x (-2/7)
- Math - Ms. Sue, Monday, October 4, 2010 at 5:01pm
-1 / (-7/2) = -1 * -(2/7) = 2/7
- Math - PsyDAG, Monday, October 4, 2010 at 5:02pm
Dividing by a fraction is that same as multiplying by the inverse of that fraction.
(-1)/(-7/2) = (-1)(-2/7) = 2/7
- Math - Dawn, Monday, October 4, 2010 at 5:05pm
Inverse means the recpitile right? so like if it was 15, it'd be 15/1 x (-3/4ths) which -3/4ths is actually 4/3s? so 15/1x4/3
- Math - Ms. Sue, Monday, October 4, 2010 at 5:07pm
Inverse means the reciprocal.
You only use the reciprocal when you divide.
15 / (3/4) = 15/1 * (4/3)
- Math - Dawn, Monday, October 4, 2010 at 5:07pm
Ah, okay. Thank you.
- Math - Ms. Sue, Monday, October 4, 2010 at 5:10pm
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