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timurjin [86]
3 years ago
8

What is the answer to the problem

Mathematics
1 answer:
yuradex [85]3 years ago
8 0
Mean = 8
the mean is discovered by adding all the numbers and dividing by how many numbers are there
MAD= 4.29
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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
3 years ago
Please help due tomarrow good luck
amid [387]

Answer:

125+1024x

if that didn't help

Sorry;-;

5 0
3 years ago
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At her job, Jesse. Earn 9 dollars and 50 cents per hour, she also earns a 60 dollar bonus every month. Jesse needs to earn at le
vichka [17]

Answer:

Jesse needs to work 43 hours in the month to make $400 and $60


work for answer: 9.50 x 43 = 408.5

example why it can't be lower or higher than 43 hours 9.50 x 42 = 399  or 9.50 x 44 = 418

7 0
4 years ago
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Show how to make one addend the next tens number. complete the new addition sentence. 15+37=?
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52, 15+37=52            llllllllll                                                                                                              
7 0
3 years ago
Read 2 more answers
HELP
goblinko [34]

Answer:

9:4

Step-by-step explanation:

4 0
3 years ago
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