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GrogVix [38]
3 years ago
6

Luerityilly CIUSS SECUMS UN SUNIUS

Mathematics
2 answers:
ruslelena [56]3 years ago
5 0

Answer:

cones cylinder sphere

Step-by-step explanation:

GarryVolchara [31]3 years ago
3 0

Answer:

1) cones

3) cylinders

5) spheres

Step-by-step explanation:

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Please simplify -8(-3a-2)
Misha Larkins [42]

Answer: 24a+16

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Solve the following ODE's: c) y* - 9y' + 18y = t^2
Nastasia [14]

Answer:

y = C_1e^{3t}+C_2e^{6t} + \dfrac{1}{18}(t^2+\frac{2t}{6} + \frac{2}{36}+\frac{2t}{3}+\frac{2}{18}+\frac{2}{9})

Step-by-step explanation:

y''- 9 y' + 18 y = t²

solution of ordinary differential equation

using characteristics equation

m² - 9 m + 18 = 0

m² - 3 m - 6 m+ 18 = 0

(m-3)(m-6) = 0

m = 3,6

C.F. = C_1e^{3t}+C_2e^{6t}

now calculating P.I.

P.I. = \frac{t^2}{D^2 - 9D +18}

P.I. = \dfrac{t^2}{(D-3)(D-6)}\\P.I. =\dfrac{1}{18}(1-\frac{D}{3})^{-1}(1-\frac{D}{6})^{-1}(t^2)\\P.I. =\dfrac{1}{18}(1-\frac{D}{3})^{-1}(1+\frac{D}{6}+\frac{D^2}{36}+....)(t^2)\\P.I. =\dfrac{1}{18}(1-\frac{D}{3})^{-1}(t^2+\frac{2t}{6} + \frac{2}{36})\\P.I. =\dfrac{1}{18}(1+\frac{D}{3}+\frac{D^2}{9}+....)(t^2+\frac{2t}{6} + \frac{2}{36})\\P.I. =\dfrac{1}{18}(t^2+\frac{2t}{6} + \frac{2}{36}+\frac{2t}{3}+\frac{2}{18}+\frac{2}{9})

hence the complete solution

y = C.F. + P.I.

y = C_1e^{3t}+C_2e^{6t} + \dfrac{1}{18}(t^2+\frac{2t}{6} + \frac{2}{36}+\frac{2t}{3}+\frac{2}{18}+\frac{2}{9})

7 0
3 years ago
Write an equation of the line.
Alja [10]

Answer:

Htjeghsjsvwuwvwhwvshvshsvshsvshs

6 0
3 years ago
Need a step by step explanation and an answer.​
lyudmila [28]

Answer:

43 is your answer I tried to help let me know if you got it right or wrong.

your answer will be 43

3 0
3 years ago
CAN SOMEONE HELP ME PLEASE
AleksAgata [21]
It’s 0.39 Hope this helps!
8 0
3 years ago
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