sullivanjakob
07.07.2019 •
Mathematics
Two investments totaling $58,500 produce an annual income of $3795. one investment yields 5% per year, while the other yields 7% per year. how much is invested at each rate?
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Ответ:
Total investment is =$58500
Annual income produced = $3795
Rate of one investment = 5%
Rate of second investment = 7%
Let the amount invested at 5% be = x
Then, amount invested at 7% rate will be =
The equation becomes:
5%x + 7%(58500-x) = 3795
= 0.05x + 0.07(58500-x) = 3795
0.05x + 4095 - 0.07x = 3795
0.02x = 300
x = 15000
Hence, the amount invested at 5% is = $15000
Amount invested at 7% = 58500-15000 = $43500
Ответ:
The fomula is y=mx+b
The number before x is the slope! Rise over run.
The + __ number is the y-intersect. use this number to place a point on the Y line.