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bezimeni [28]
3 years ago
14

Emily is making lunch from leftover items found in her fridge. She has pasta , soup , or pizza rolls.To drink, she has a choice

of milk, juice or water. What is the probability that Emily chooses soup and juice
Mathematics
1 answer:
yuradex [85]3 years ago
7 0
I’m not really sure check another scholar
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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
Solve for x. solve for x. solve forx.
Veronika [31]
X = 7
hope this helps
8 0
3 years ago
Read 2 more answers
Can someone help me please i don’t understand it i really need too finish it by tonight
guajiro [1.7K]

Don't mind me, I just need points haha

6 0
3 years ago
I need help with this question plsss
olga55 [171]

Answer: maybe its 6

Step-by-step explanation:

i think its 6 because it has +3 so maybe adding 3+3

7 0
3 years ago
Question:
snow_tiger [21]

Answer:

A (first picture)

Step-by-step explanation:

Based on the picture, the lines are both perpendicular and the red line splits AB into two equal parts (bisects it), so it must represent the perpendicular bisector of AB.

5 0
2 years ago
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