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maria [59]
3 years ago
14

Write the given second order equation as its equivalent system of first order equations. u″+5u′+4u=0 u″+5u′+4u=0 use vv to repre

sent the "velocity function", i.e. v=u′(t)v=u′(t). use vv and uu for the two functions, rather than u(t)u(t) and v(t)v(t).
Mathematics
1 answer:
laila [671]3 years ago
8 0

v = u', so v' = u'' and the original equation can be written

... v' + 5v + 4u = 0

Then the system of first-order equations is

... u' = v

... v' = -5v -4u

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Solve for p:<br><br> p – 23 = -3<br> A. p = 20<br> B. p = -20<br> C. p = -26<br> D. p = 69
Alekssandra [29.7K]
P-23=-3
+23 +23

P=20

so the answer is A
6 0
1 year ago
Math please help! Solve for x.
S_A_V [24]
I think the answer should be
x \geqslant 2
7 0
3 years ago
PLEASE HELP AND SHOW ALL STEPS
Alja [10]

Combining the like terms, the simplified polynomials are given as follows:

a) 4x² - 14x + 17

b) -5x² - 20x + 8

<h3>How are polynomials simplified?</h3>

Polynomials are simplified combining the like terms, that is, adding these numbers with the same variable.

Item a:

4(x - 2)(x + 1) - 5(2x - 5)

Applying the distributive property:

4(x² - x - 2) - 10x + 25

4x² - 4x - 8 - 10x + 25

Combining the like terms:

4x² - 4x - 10x - 8 + 25

4x² - 14x + 17

Item b:

-5(x + 2)² + 28

-5(x² + 4x + 4) + 28

-5x² - 20x - 20 + 28

-5x² - 20x + 8

More can be learned about the simplification of polynomials at brainly.com/question/24450834

#SPJ1

4 0
1 year ago
The length of a rectangle is 3 less than 2 times the width if the perimeter is 60 what is the length
Semenov [28]
P=2w+(2w-3)
60=4w-3
63=4w
15.75=w

l=2w-3
l=(2×15.75)-3
l=31.5-3
l=28.5

This answer doesn't add up so if you meant the COMBINED width then:

P=w+(2w-3)
60=3w-3
63=3w
21=w

l=2(21)-3
l=42-3
l=39

(This answer checks out so this is probably what you meant hope I helped)
7 0
2 years ago
Adina a colectionat 32 de cartonase cu fluturi. Ea schimba 8 cartonase cu fluturi pentru cartonase cu pesti. Daca un cartonas cu
dexar [7]


 32-8=24[cartonase cu fluturi mai are]
8 ori 3=24[cartonase cu pesti]
24+24=48[cartonase are in total]

8 0
2 years ago
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