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3 years ago

8

Keisa borrowed $400 at a simple interest rate of 3% per year. How much interest will she owe in 18 months?

2 answers:

sineoko [7]3 years ago

6 0

Answer:

simple interest calculator, simple interest formula, what is simple interest, ... financing will cost you or how much you can earn on an investment. ... Annual Interest Rate ... you must repay not only the amount you borrowed – the principal ... Calculate simple interest (I) by multiplying the principal (p) by the rate

Step-by-step explanation:

julsineya [31]3 years ago

6 0

Answer:

$18

Step-by-step explanation:

convert 18 months to year(s) and use the simple interest formula

interest=principal<em>x</em>rate<em>x</em>time

<u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u>1</u><u>0</u><u>0</u>

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Please help me with the below question.

VMariaS [17]

By letting

$y = \displaystyle \sum_{n=0}^\infty c_n x^{n+r}$

we get derivatives

$y' = \displaystyle \sum_{n=0}^\infty (n+r) c_n x^{n+r-1}$

$y'' = \displaystyle \sum_{n=0}^\infty (n+r) (n+r-1) c_n x^{n+r-2}$

a) Substitute these into the differential equation. After a lot of simplification, the equation reduces to

$5r(r-1) c_0 x^{r-1} + \displaystyle \sum_{n=1}^\infty \bigg( (n+r+1) c_n + (n + r + 1) (5n + 5r + 1) c_{n+1} \bigg) x^{n+r} = 0$

Examine the lowest degree term $\left(x^{r-1}\right)$ , which gives rise to the indicial equation,

$5r (r - 1) + r = 0 \implies 5r^2 - 4r = r (5r - 4) = 0$

with roots at r = 0 and r = 4/5.

b) The recurrence for the coefficients $c_k$ is

$(k+r+1) c_k + (k + r + 1) (5k + 5r + 1) c_{k+1} = 0 \implies c_{k+1} = -\dfrac{c_k}{5k+5r+1}$

so that with r = 4/5, the coefficients are governed by

$c_{k+1} = -\dfrac{c_k}{5k+5} \implies \boxed{g(k) = -\dfrac1{5k+5}}$

c) Starting with $c_0=1$ , we find

$c_1 = -\dfrac{c_0}5 = -\dfrac15$

$c_2 = -\dfrac{c_1}{10} = \dfrac1{50}$

so that the first three terms of the solution are

$\displaystyle \sum_{n=0}^2 c_n x^{n + 4/5} = \boxed{x^{4/5} - \dfrac15 x^{9/5} + \frac1{50} x^{13/5}}$

4 0

2 years ago

Look at this set of ordered pairs:

jeka57 [31]

Answer:

No

Step-by-step explanation:

<u>Given ordered pairs:</u>

(3, -13)
(3, 2)
(18,-5)

There is a repeat of domains (3) with different range (-13 and 2) but the function can't have repeat domains so it is not a function

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2 years ago

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My kid asked me what was 5y-3+6 i couldnt answer it because this is all new to me we didnt do this when i was younger and i need

S_A_V [24]

Answer:

Add−3 and 6 .5y+3

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2 years ago

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The Lawrence family went out to dinner. The

statuscvo [17]

Answer: 9.70$

Step-by-step explanation: The equation is 53.89 * 0.18 = 9.7002 but, If you round to the nearest hundred it is 9.70$. Hope this helped!!!

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3 years ago

The temperature at noon was 88°f. By 4 p.M., the temperature was 27°f. Determine the constant rate of change of the temperature.

yawa3891 [41]

i think it would be 2 degrees every hour for 10 to 11 hours i think it would be 2 degrees

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3 years ago