anonymous
  • anonymous
Substitue I=100 r=0.01 t=1/2 into the formula for simple intrest and solve for P I=Prt 100 =P(0.01) (1/2) 100= P(0.05) 2,000=P multiply and solve for p I know how to get everything but the 2,000. Need the forumla on what they are multiply and how they are multiply to get the 2,000
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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myininaya
  • myininaya
let see you divided both sides by 0.05 giving you 100=P*(1/100)(1/2) 100=P*(1/200) 2000=P by multiplying 200 on both sides
anonymous
  • anonymous
still kinda lost sorry
anonymous
  • anonymous
or what would problom look like when divied

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More answers

myininaya
  • myininaya
do you know .01=1/100?
myininaya
  • myininaya
Examples: 1/10=.1, 1/100=.01, 1/1000, .001, 1/10000=.0001 so on....
anonymous
  • anonymous
yea i know that
myininaya
  • myininaya
ok do you know how to multiply 1/100 * 1/2
myininaya
  • myininaya
=(1*1)/(100*2)=1/200
myininaya
  • myininaya
to multiply fractions you multiply straight across on the numerator and then for the denominator like I did above
myininaya
  • myininaya
Since we are trying to get P by itself and it is being multiplied by that 1/200 to undo this multiplication we multiply by the multiplicative inverse of 1/200 to get the multiplicative identity 1. The multiplicative inverse of 1/200 is just its reciprocal which is 200. So we multiplied by 200 to get the multiplicative identity. The multiplicative identity times any number will be that number since the multiplicative identity is 1. But since we multiply 200 on one side we have to do it to the other side of the equation
myininaya
  • myininaya
any questions?
anonymous
  • anonymous
nope thanks alot
myininaya
  • myininaya
really you're good?
myininaya
  • myininaya
isn't the word multiplicative cool?
myininaya
  • myininaya
say yes. you know you want to
anonymous
  • anonymous
yes
anonymous
  • anonymous
lol, random
myininaya
  • myininaya
i had the hardest time saying that word, and I finally got it. I used to couldn't say it
anonymous
  • anonymous
lol well not really i man i kinda get the problem but i mean
myininaya
  • myininaya
I like to change everything to fractions, but you could have left it "deciamly"
myininaya
  • myininaya
decimaly*
anonymous
  • anonymous
yea i show you next problem and then show you what i think then can maybe walk me throw it lol like i have done others on here before lol
anonymous
  • anonymous
i will show you problem
myininaya
  • myininaya
k bring it
anonymous
  • anonymous
there is a screen shoot of the problem
1 Attachment
anonymous
  • anonymous
i know that the fraction will be 3/4
anonymous
  • anonymous
because 9/12=0.075 wich is 3/4 in fraction
myininaya
  • myininaya
are you talking about your P is 3/4? If so, then thats incorrect
anonymous
  • anonymous
so i will take 0.04 (3/4)
anonymous
  • anonymous
t
anonymous
  • anonymous
becasue be 9 /12
myininaya
  • myininaya
Our formula for interest is I=Prt where r=4% and t=9 and I=42 and they ask us to solve for P. Let me see you plug those in
anonymous
  • anonymous
okay give me sec
myininaya
  • myininaya
k
anonymous
  • anonymous
I=42,r=0.04,and t=9/12=3/4 thats what i got so far
anonymous
  • anonymous
and in terms i will have
anonymous
  • anonymous
I=prt 42=(0.04)(3/4) 42=P(0.03) then how will i caculate to get P
myininaya
  • myininaya
I thought t=9? let me look again
myininaya
  • myininaya
t=9 not 3/4
anonymous
  • anonymous
i will show you an exapmle it gives me how to do problem
anonymous
  • anonymous
same problem with exapmle beside it
1 Attachment
anonymous
  • anonymous
but say's got to divide 9 by 12 months
myininaya
  • myininaya
oh i didnt see the month thing sorry
myininaya
  • myininaya
yes there are 12 months so the time will be 9/12 gj
anonymous
  • anonymous
wich means will be 0.075 in dec and 3/4 in fraction
myininaya
  • myininaya
3/4=.75
anonymous
  • anonymous
yea
anonymous
  • anonymous
I=prt 42=(0.04)(3/4) 42=P(0.03) do i got to divide the 0.04 and (3/4)
myininaya
  • myininaya
yes so far correct
anonymous
  • anonymous
but if i divide i will get 0.05
anonymous
  • anonymous
if i divide 0.04 and 3/4
anonymous
  • anonymous
get 0.05 right
myininaya
  • myininaya
since we should be multiplying those we get .03
anonymous
  • anonymous
all i get it
anonymous
  • anonymous
now thats so crazy lol
anonymous
  • anonymous
then i take 0.03/42 and that =P
anonymous
  • anonymous
i mean *
myininaya
  • myininaya
42/.03
anonymous
  • anonymous
=140
anonymous
  • anonymous
thats crazy i been working on problem couple days and all i need to do lol
myininaya
  • myininaya
1400
anonymous
  • anonymous
i knew how to work problem
anonymous
  • anonymous
thanks for all your help man thanks alot
myininaya
  • myininaya
ur welcome
anonymous
  • anonymous
maybe can help me with couple more
anonymous
  • anonymous
i wirked on i got most of problem but can figure certin ones out
anonymous
  • anonymous
parts of them
myininaya
  • myininaya
k
anonymous
  • anonymous
1 Attachment
anonymous
  • anonymous
like i get 33.25 ______ 1900 (3/13) make r=
anonymous
  • anonymous
3/12
myininaya
  • myininaya
yes looks good
myininaya
  • myininaya
the first one does. did you want me to check the other two or something?
myininaya
  • myininaya
what was your strategy for the next one?
anonymous
  • anonymous
the frist two are good what i am having trouble with is the intrest rate
anonymous
  • anonymous
actual intrest
myininaya
  • myininaya
what is the formula for actual interest?
anonymous
  • anonymous
look at the example shows how to get the actual interrest
1 Attachment
anonymous
  • anonymous
i know how to do problem but like when i divide then top by botton and add the bottem times ther fraction not sure i am doing ti right
myininaya
  • myininaya
so r=I/(Pt)=33.25/(1866.75*3/12)
myininaya
  • myininaya
i will bbl maybe
anonymous
  • anonymous
lol

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