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Rufina [12.5K]
3 years ago
14

What is the answer to 1.3 (6.3r - 4.2) = 66.9

Mathematics
2 answers:
liubo4ka [24]3 years ago
5 0
R = 804/91


8.835

this is ur answer i how i helped
vovikov84 [41]3 years ago
5 0
What is the answer to 1.3 (6.3r - 4.2) = 66.9

1 = 1, r = 4.20635
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At beginnings of population study a city had 330,000 people. Eac year since, the population has grown by 6.8% . let t be the num
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Y=330,000(1.068)^t

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Compound interest In Exercise,$3000 is invested in an account at interest rate r,compounded continuously.Find the time required
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Answer:

(a) 8.15

(b) 12.92

Step-by-step explanation:

Given: P = $3000, r = 0.085

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Take log_{e} of both sides

               log_{e}2 = log_{e}e^{0.085t}

But log_{e}e = 1

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(b) For the amount to double, A = 3 × P

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               log_{e}3 = log_{e}e^{0.085t}

But log_{e}e = 1

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               t = \frac{ln3}{0.085}

               t = \frac{1.0986}{0.085}

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5 0
3 years ago
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vovikov84 [41]
ANSWER

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EXPLANATION

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Answer:

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