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maxpaz782
08.10.2019 •
Mathematics
Sheila bought a new computer for $2000 and has agreed to finance it at 12% interest, with $100 payments each month. when she makes her first payment next month, how much will she pay for interest alone?
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Ответ:
rate per month = .01 agreed = r
Luckily they only ask for the first month so it is 0.01 * 20 .
Later months get more complicated and it is like paying off a mortgage with the term unknown but the rate and payment known.
Payment = principal value [ r / {1-(1+r)^-n } ]
100 = 2000 [ .01 / {1 - (1.01)^-n } ]
5 = 1/ {1 - (1.01)^-n }
.2 = 1 - (1.01)^-n
.8 = 1.01^-n
log .8 = -n log 1.01
n = 22.4 months :)
so over the almost two years pay 2240 total :)
* Hopefully this helps:) Mark me the brainliest:)!!!
Ответ:
B I personally think..
Step-by-step explanation:
Hi,
Use Differential Formula :
d(u(x) • v(x))/dx = u'(x) • v(x) + u(x) • v'(x)
at x = 1 :
d(u(1) • v(1))/dx = u'(1) • v(1) + u(1) • v'(1)
d(u(1) • v(1))/dx = -5 • 6 + 4 • -2
d(u(1) • v(1))/dx = -30 - 8
d(u(1) • v(1))/dx = -38
Hope this helped :)