HOW DID I NOT KNOW THIS?!
Why do I learn more about math from Tumblr than my 12+ years of formal education????????
No math teacher ever taught me this trick. Got damn.
This is great and all if you know how to subtract things from 100
Ok, let me show you how this thing works.
Say you have two numbers A and B {in the example above 97 and 96} these two numbers can be represented by (100-x) and (100-y) {in the example above x = 3 because 100 – 3 = 97 => 100 – 97 = 3 and y = 4}. Now since A = (100-x) and B=(100 – y) therefore A*B = (100-x)*(100-y).
So if you want to multiply A*B it is the exact same as multiplying (100-x)*(100-y).
Good, so lets expand this sucker
(100-x)*(100-y)=100*100 – x*100 – y*100 -x*-y
So now lets combine things creativity
=(100 – x – y)*100 + x*y
=(100 – (x+y))*100 + x*y
So now you see it. 100-(x+y) shows up in the hundreds place {100-(3+4)=93 in this example} and x*y shows up in the ones place {3*4 = 12 in this example} thus giving the solution {9312}
Now what does that mean, well it means you can use this trick in a much wider application…
Like numbers close to different multiples of 10. For example 1000.
993 * 996
{1000 – 993 = 7}
{1000 – 996 = 4}
{1000 – (7+4) = 1000 – 11 = 989}
{7*4 = 028}
Therefore the first number now goes in the thousands place and the second in the ones place. Meaning
993*996 = 989028
We can also use it for numbers close to numbers that don’t start with 1 like 200.
192*195
{200 – 192 = 8}
{200 – 195 = 5}
{200 – (8+5) = 200 – 13 = 187}
Since 187 shows up in the 200’s place we need to multiply it by 2 to get the number that shows up in the 100’s place thus (187 *2 = 374)
{8*5 = 40}
Thus
192*195=37440
Have Fun!
there are legitimate members of society that believe that you have to be smart to understand the jokes in the big bang theory
The Hour of the Furnaces/La hora de los hornos (Octavio Getino and Fernando Solanas - 1968)
Can’t believe how Pino turned out. Can’t imagine those words coming out of his mouth anymore.
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[TW: domestic violence]
A chapter of Hoff Sommers’s book covers the topic of battering. In it, she dismisses statistics that show that women are disproportionately the victims of battering within relationships, basing her dismissal on the same Straus and Gelles survey results that reveal “gender symmetry,” or that women are as likely to hit their male partners as men do women. What Hoff Sommers neglects to tell the readers is that most women fight back in self-defense, or engage in lower-level acts of aggression, and that once the context is uncovered, the pattern of “man as primary aggressor” is clearer and accounts for much of the “mutual combat” argument.
[…]
In the academic literature, the “mutual combat hypothesis” has long been debated and, by many accounts, discarded. Refinements in prevalence measures augmented by findings from qualitative research reveal that once contextual factors (such as motivation, injury) are taken into account, it is men who commit the disproportionate amount of serious battering. Gender or sexual symmetry, as it is sometimes called, in domestic battering is most likely to occur among teen or dating couples or with less severe forms of violence like spitting, pushing, or pulling hair. Battering that results in serious physical injury is overwhelmingly committed by males against their female partners or ex-partners.
[…]
In the academic literature, the “mutual combat hypothesis” has long been debated and, by many accounts, discarded. Refinements in prevalence measures augmented by findings from qualitative research reveal that once contextual factors (such as motivation, injury) are taken into account, it is men who commit the disproportionate amount of serious battering. Gender or sexual symmetry, as it is sometimes called, in domestic battering is most likely to occur among teen or dating couples or with less severe forms of violence like spitting, pushing, or pulling hair. Battering that results in serious physical injury is overwhelmingly committed by males against their female partners or ex-partners.
— Michelle L. Meloy and Susan L. Miller, The Victimization of Women: Law, Policies, and Politics (via wretchedoftheearth)
Tilda Swinton in Xilitla, San Luis Potosí, México
Stranger than paradise - photographed by Tim Walker for W magazine.
Sculpture of Leonora Carrington, Paintings by Remedios Varo.I just love tilda so much you do not know
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There is no African, myself included, who does not appreciate the help of the wider world, but we do question whether aid is genuine or given in the spirit of affirming one’s cultural superiority. My mood is dampened every time I attend a benefit whose host runs through a litany of African disasters before presenting a (usually) wealthy, white person, who often proceeds to list the things he or she has done for the poor, starving Africans. Every time a well-meaning college student speaks of villagers dancing because they were so grateful for her help, I cringe. Every time a Hollywood director shoots a film about Africa that features a Western protagonist, I shake my head — because Africans, real people though we may be, are used as props in the West’s fantasy of itself. And not only do such depictions tend to ignore the West’s prominent role in creating many of the unfortunate situations on the continent, they also ignore the incredible work Africans have done and continue to do to fix those problems.
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Rape of wives by husbands is a form of wife abuse. As regards sexual abuse in marriage, I am aware of no findings of husband sexual abuse by the wife (though men report experiencing sexual withholding as abusive). Sexual abuse by husbands, however, is well documented (see, for example, Finkelhor and Yllo 1985).
—
Dee Graham, Edna Rawlings & Roberta Rigsby. Loving to Survive: sexual terror, men’s violence, and women’s lives. NYU Press. July 1 1994. (p. 8)
The fact that so many men see women not giving consent for sexual activity as “abusive” (i.e.: “friendzoning), or in some cases, even as unjust and oppressive, is unbelievably pathetic.
(via gynocraticgrrl)
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Through a career that has included crotch-grabbing, nudity, BDSM, Marilyn Monroe fetishizing, and a 1992 book devoted to sex, Madonna has been viewed as a feminist provocateur, pushing the boundaries of acceptable femininity. But Beyoncé’s use of her body is criticized as thoughtless and without value beyond male titillation, providing a modern example of the age-old racist juxtaposition of animalistic black sexuality vs. controlled, intentional, and civilized white sexuality.
—
All Hail the Queen? (http://bitchmagazine.org/article/all-hail-the-queen-beyonce-feminism#.UZvUyP56MrU.facebook)
(Source: rickstallion)
White people get mad when you wear a band t shirt of a band you don’t listen to, but they’re fine with wearing headdresses from cultures they know and care nothing about.
