5year amortization schedule
loan amount or principal
interest rate on loan
extra payment to principal
$ 12,575.00
9.45%
month payment principal interest balance
1$ 263.79$ 164.76 $ 99.03 $ 12,410.24
263.79 $ 166.06 $ 97.73 $ 12,244.18
3 $ 263.79$ 167.37$ 96.42 $ 12,076.81
4 $
263.79$ 168.69 $ 95.10 $ 11,908.12
5$ 263.79 $ 170.01$ 93.78 $ 11,738.11
6 $ 263.79 $ 171.35 $ 92.44 $ 11,566.75
7 $ 263.79$ 172.70$ 91.09 $ 11,394.05
8 $ 263.79 $ 174.06 $ 89.73 $ 11,219.99
9 $ 263.79$
175.43 $ 88.36 $ 11,044.55
10 $ 263.79$ 176.82 $ 86.98 $ 10,867.74
11 $ 263.79$
178.21 $ 85.58 $ 10.689.53
12 $ 263.79$ 179.61 $ 84.18 $ 10,509.92
13 $ 263.79 $ 181.03 $ 82.77 $ 10.328.89
145
263.79$ 182.45 $ 81.34 $ 10.146.44
15 $ 263.79$ 183.89 $ 79.90 $ 9.962.55
after one year of payments, how much has been paid to interest?

step-by-step explanation:

30% of $420 is 0.30($420) = $126 and $420 + $126 = $546.

or, 130% of $420 is 1.3($420) = $546.

notice that this is not the $600 original list price with which we started.

why doesn't this work?

the method does not work because 30% of $420 is not the same amount as the 30% of $600. it may seem obvious when stated this way, but it is a very common error made on problems of this type. we cannot just use the same percent and get back to the original amount because we are taking that percent of a different value.

to work problems of this type correctly, it is generally best to write an equation for the situation and then solve.

example: since (100% – 30%)(original price) = (sale price)

70% of the   (original price) is $420.

0.7x   = 420

equation image indicator

x = 600

the original cost was $600.

we may also solve this problem using the two-step method. working the problem in two steps requires us to use more algebra skills. we have to know that x = 1x (identity property of multiplicationtext annotation indicator) and that 1x – 0.3x = 0.7x (subtracting like terms). then we solve the problem as follows:

(original price) – 30%(original price) = sale price

x – 0.3x = 420

0.7x = $420

equation image indicator

x = 600

the original cost was $600.  

note that with both of the above methods we do obtain the correct original amount.

example: after a 5% pay raise, hermione is earning $22,680 per year. what was she earning before the pay raise?

105% of (original salary) = current salary

1.05x = 22,680

equation image indicator

x = 21,600

hermione earned $21,600 per year before the pay raise.

this is an example so maybe you will get how to at least do it!

add an image, and i will answer

step-by-step explanation:

a. 12.5 kg

step-by-step explanation:

f = ma

so

m = f/a = (2500 n)/(200 m/s²) = 12.5 kg

1 n = 1 kg·m/s²

the answer is 62.8 cubic units