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3 years ago

7

if $55 is put in an account that gets 6% and i add $20 at the end of each year, how much will i have at the end of 10 years?

1 answer:

dolphi86 [110]3 years ago

5 0

I will not give you the answer but I will show you how to solve this.

55*.6= A
65*.6=B
75*.6=C
85*.6 = D

Do you see the trend? Continue until ten equations are formed and add all of the totals. A+B+D+C...=Total

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olga nikolaevna [1]

Answer:

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Step-by-step explanation:

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3 years ago

Consider the initial value problem:

Inessa [10]

Answer:

$\left \{ {{u'=v} \atop {v'=5v-6u-5\sin(2t)}} \right. \\u(0)=-5;u'(0)=2$

Step-by-step explanation:

The given initial value problem is;

$y''-5y'+6y=-5\sin(2t)---(1)\\y(0)=-5,y'(0)=2$

Let

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Differentiating both sides of equation (1) with respect to $t$ , we obtain:

$u'(t)=y'(t)---(4)\\ \\\implies u'(t)=v(t)---(5)$

Differentiating both sides of equation (2) with respect to $t$ gives:

$v'(t)=y''(t)----(6)$

From equation (1),

$y''=5y'-6y-5\sin(2t)\\y''=5v(t)-6u(t)-5\sin(2t)\\\implies v'(t)=5v(t)-6u(t)-5\sin(2t)----(7)$

Putting t=0 into equation (2) yields

$u(0)=y(0)\\\implies u(0)=-5$

Also putting t=0 into equation (3)

$u'(0)=y'(0)\\u'(0)=2$

The system of first order equations is:

$\left \{ {{u'=v} \atop {v'=5v-6u-5\sin(2t)}} \right. \\u(0)=-5;u'(0)=2$

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3 years ago

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mario62 [17]

Answer:

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Step-by-step explanation:

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I hope this helps!

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sergeinik [125]

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Step-by-step explanation:

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2 years ago

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