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2 years ago

14

What is the smallest integer larger than 26 √ 5 A.1 B.2 C.4 D.5 E.6

1 answer:

grin007 [14]2 years ago

3 0

5 is your answer in this problem!!!!

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Let y′′′−9y′′+20y′=0. find all values of r such that y=erx satisfies the differential equation. if there is more than one correc

DerKrebs [107]

we are given

differential equation as

$y'''-9y''+20y'=0$

we are given

$y=e^{rx}$

Firstly, we will find y' , y'' and y'''

those are first , second and third derivative

First derivative is

$y'=re^{rx}$

Second derivative is

$y''=r*re^{rx}$

$y''=r^2e^{rx}$

Third derivative is

$y'''=r^2*re^{rx}$

$y'''=r^3e^{rx}$

now, we can plug these values into differential equation

and we get

$r^3 e^{rx}-9r^2 e^{rx}+20re^{rx}=0$

now, we can factor out common terms

$e^{rx}(r^3 -9r^2 +20r)=0$

we can move that term on right side

$(r^3 -9r^2 +20r)=0$

now, we can factor out

$r(r^2 -9r +20)=0$

$r(r-5)(r-4)=0$

now, we can set them equal

$r=0$

$r-5=0$

$r=5$

$r-4=0$

$r=4$

so, we will get

$r=0,4,5$ ...............Answer

4 0

4 years ago

Suppose the expression a(b)n models the approximate number of people who visited an aquarium each day since an aquarium opened,

mel-nik [20]

Answer:

A

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

A newspaper reports the median house price is $250,000. From that standard, tell what you know about housing prices.

Alik [6]

You know that the average house price is $250,000 dollars
Median means medium

8 0

3 years ago

The area of a rectangle is 229.2 m2. If the length is 15 m, what is the perimeter of the rectangle

igor_vitrenko [27]

Answer:

$\large\boxed{P=60.56\ m}$

Step-by-step explanation:

The formula of an area of a rectangle:

$A=lw$

l - length

w - width

We have

$A=229.2\ m^2\\\l=15\ m$

Substitute:

$15w=229.2$ <em>divide both sides by 15</em>

$w=15.28\ m$

The formula of a perimeter of a rectangle:

$P=2(l+w)$

Substitute:

$P=2(15+15.28)=2(30.28)=60.56\ m$

8 0

4 years ago

What is the probability of rolling a 5 on a dice?<br><br> Provide answer as REDUCED FRACTION!

melisa1 [442]

Answer:

i mean, if its a 6 sided dice, then 1/6

Step-by-step explanation:

8 0

3 years ago