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2 years ago

Please help fast!! Find the total surface area of the following cylinder:

Mathematics

2 answers:

neonofarm [45]2 years ago

7 0

explanation:total=addition

area=base x height plus the width (area the amount beneath the surface).

equation:3cm both sides 3cm

answer: 3+3= 6cm .

maria [59]2 years ago

3 0

Answer: 36

Step-by-step explanation:

Formula: 2 pi rh + 2 pi r2

2 pi 3 • 3 + 2 pi 9

Leave answers in terms of pi

18 pi + 18 pi = 36 pi

Answer = 36

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Find the missing side lengths.Leave your answers in simplest radical form.

lina2011 [118]

Answer:

6) 9 7) 8 8) 7 9) 9

Step-by-step explanation:

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2 years ago

Find a general solution of y" + 8y' + 16y=0.

Misha Larkins [42]

Answer:

The general solution: $C_{1}e^{-4x} + xC_{2}e^{-4x}$

Step-by-step explanation:

Differential equation: y'' + 8y' + 16y = 0

We have to find the general solution of the above differential equation.

The auxiliary equation for the above equation can be writtwn as:

m² + 8m +16 = 0

We solve the above equation for m.

(m+4)² = 0

$m_{1}$ = -4, $m_{2}$ = -4

Thus we have repeated roots for the auxiliary equation.

Thus, the general solution will be given by:

y = $C_{1}e^{m_{1}x} + xC_{2}e^{m_{2}x}$

y = $C_{1}e^{-4x} + xC_{2}e^{-4x}$

6 0

2 years ago

State whether the lines are parallel, perpendicular or neither. y = x+1 y = -x-2 (5 points) A. Parallel B. Perpendicular C. Neit

Anuta_ua [19.1K]

B. perpendicular is correct

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3 years ago

Why does it say this am i supposed to be ranked up or what?

tatiyna

Answer:

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2 years ago

How do you simplify 2/7 times 3/5

Mashcka [7]

Answer:

31/45.

Step-by-step explanation:

Give them common denominators, and then if you have to add them, add them if subtract, then subtract, if multiply, then multiply. And if you have to divide it to make the fraction smaller, then do so.

8 0

2 years ago