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2 years ago

12

Quincy has saved $2500 so far to buy a new car in 4 years. He can put this amount into an account, that

1 answer:

devlian [24]2 years ago

5 0

Answer:

he should chose compounded annually because he would have and extra 32.12 dollars at the end of the 4 years

Step-by-step explanation:

hope this helps

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दिइएका शब्दसंग मिल्ले अनुप्रासयुक्त शब्द खोज्नुहोस् :

zvonat [6]

Ohhh yes definitely

5 0

3 years ago

Read 2 more answers

Which of the following is a metric unit of measure that measures length and distance? Foot Meter Area Yard

Liula [17]

Area is not a unit of measure. Foot and Yard are US customary units. Meter is the correct answer.

3 0

3 years ago

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How do you order 9.35, 9 4/5, and , 9 1/10 from greatest to least?

Anettt [7]

The answer: (C) 4/5 would be .8 which makes 9 4/5 into 9.8. 1/10 is .1 which makes 9 1/10 into 9.1

7 0

3 years ago

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Use the substitution of x=e^{t} to transform the given Cauchy-Euler differential equation to a differential equation with consta

kherson [118]

By the chain rule,

$\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{\mathrm dy}{\mathrm dt}\dfrac{\mathrm dt}{\mathrm dx}\implies\dfrac{\mathrm dy}{\mathrm dt}=x\dfrac{\mathrm dy}{\mathrm dx}$

which follows from $x=e^t\implies t=\ln x\implies\dfrac{\mathrm dt}{\mathrm dx}=\dfrac1x$ .

$\dfrac{\mathrm dy}{\mathrm dt}$ is then a function of $x$ ; denote this function by $f(x)$ . Then by the product rule,

$\dfrac{\mathrm d^2y}{\mathrm dx^2}=\dfrac{\mathrm d}{\mathrm dx}\left[\dfrac1x\dfrac{\mathrm dy}{\mathrm dt}\right]=-\dfrac1{x^2}\dfrac{\mathrm dy}{\mathrm dt}+\dfrac1x\dfrac{\mathrm df}{\mathrm dx}$

and by the chain rule,

$\dfrac{\mathrm df}{\mathrm dx}=\dfrac{\mathrm df}{\mathrm dt}\dfrac{\mathrm dt}{\mathrm dx}=\dfrac1x\dfrac{\mathrm d^2y}{\mathrm dt^2}$

so that

$\dfrac{\mathrm d^2y}{\mathrm dt^2}-\dfrac{\mathrm dy}{\mathrm dt}=x^2\dfrac{\mathrm d^2y}{\mathrm dx^2}$

Then the ODE in terms of $t$ is

$\dfrac{\mathrm d^2y}{\mathrm dt^2}+8\dfrac{\mathrm dy}{\mathrm dt}-20y=0$

The characteristic equation

$r^2+8r-20=(r+10)(r-2)=0$

has two roots at $r=-10$ and $r=2$ , so the characteristic solution is

$y_c(t)=C_1e^{-10t}+C_2e^{2t}$

Solving in terms of $x$ gives

$y_c(x)=C_1e^{-10\ln x}+C_2e^{2\ln x}\implies\boxed{y_c(x)=C_1x^{-10}+C_2x^2}$

4 0

3 years ago

Ill mark brainlist plss help

marishachu [46]

Answer:

81 mi^2

Step-by-step explanation:

what u need to do is.....just find area..seems to be very easy!!!....

6 0

3 years ago