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34kurt
3 years ago
12

Please help me out guys

Mathematics
1 answer:
Margarita [4]3 years ago
4 0
The answer is the last choice. (a, b), in this question, means the domain or range is from a to b, exclusive. When you use ∞, you would always use the exclusive.
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7100 dollars is placed in an account with an annual interest rate of 5%. To the nearest tenth of a year, how long will it take f
kow [346]

Answer:

After 26.91\ years the principle amount value will reach to 26400\ dollars.

Step-by-step explanation:

Given that,

                 Principle Amount (P)= 7100\ dollars

                 Rate of Interest (R)= 5%

                 Total Amount (A)= 26400\ dollars

If Principle Amount (P) =P\ dollars, Time =t\ years, Rate of Interest =R% pa

when interest is compounded annually:

Total Amount after t\ years = P(1+\frac{R}{100}) ^{t}

Now,

         A= P(1+\frac{R}{100}) ^{t}

     ⇒ 26400=7100(1+\frac{5}{100}) ^{t}

     ⇒ 3.7183=(1+0.05)^{t}

     ⇒ 3.7183=(1.05)^{t}

taking log both sides, we get

         ln(3.7183)=ln {(1.05)^{t}}

     ⇒ 1.31327=t\times ln(1.05)

     ⇒ 1.31327=t\times 0.04879

    ⇒ t=26.91

Therefore,

After 26.91\ years the principle amount value will reach to 26400\ dollars.

6 0
4 years ago
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Take point (2,7) into point slope
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Convert
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Step-by-step explanation:

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