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alexgriva [62]
3 years ago
10

(3,4) and (12,-2) what is the y intercept

Mathematics
1 answer:
Lapatulllka [165]3 years ago
3 0

Answer:

6

Step-by-step explanation:

First I found the slope, and then I plugged a point into the equation as X and Y, and got the Y-int

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A scale diagram of a house is 3in=7 1/2ft. How tall is the actual house if the diagram is 8 1/2in? ​
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Read 2 more answers
3.4.13
xxMikexx [17]

Answer:

  • $3100 at 12%
  • $2800 at 6%

Step-by-step explanation:

Let x represent the amount on deposit at 12%. Then 5900-x is the amount deposited at 6%, and the total interest earned is ...

  12%·x +6%·(5900 -x) = 540

  0.06x + 354 = 540 . . . . . . . . eliminate parentheses

  0.06x = 186 . . . . . . . . . . . . . . subtract 354

  x = 3100 . . . . . . . . . . . . . . . . . divide by 0.06

Scott invested $3100 at 12% and $2800 at 6%.

_____

<em>Quick sanity check</em>

The average interest earned is $540/$5900 ≈ 0.0915 ≈ 9.15%. This is more than the average of 12% and 6%, which is (12+6)/2 = 9 percent. Hence more than half of the money must be deposited at 12%.

8 0
3 years ago
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