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sleet_krkn [62]
2 years ago
11

If y=12 when x=6 determine y when x=18

Mathematics
1 answer:
sashaice [31]2 years ago
4 0
So y=12 when x=6.  If x=18, y must also be multiplied by 3; and so <u>y=36 when x=18.</u>
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Lucy have $6400 if she invests<br> $1200 at 15% interest<br> compounded quarterly?
svet-max [94.6K]

Answer:

  11.4 years

Step-by-step explanation:

We assume you want to know the time it takes for Lucy's investment of $1200 to have a value of $6400. The compound interest formula is good for finding that.

  FV = P(1 +r/n)^(nt)

for principal P invested at rate r per year for t years, compounded n times per year. We want to find t such that ...

  6400 = 1200(1 +0.15/4)^(4t)

  16/3 = 1.0375^(4t) . . . . divide by 1200

  log(16/3) = 4t·log(1.0375) . . . . take logarithms

  t = log(16/3)/(4·log(1.0375)) ≈ 11.4

It will take about 11.4 years for Lucy's investment value to be $6400.

8 0
3 years ago
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Step-by-step explanation:

4 0
2 years ago
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BigorU [14]

Answer:

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7 0
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The correlation coefficient for the ages of drivers in a driver safety class and the number of traffic violations they have rece
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