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2 years ago

Do the surface area plzzz and u get 25 points and if u Dk don’t answer and no links

Mathematics

2 answers:

Angelina_Jolie [31]2 years ago

6 0

Answer:

SA = 184 m²

Step-by-step explanation:

The opposite faces of the cuboid are congruent , then surface area (SA) is

SA = 2(2 × 6) + 2(6 × 10) + 2(2 × 10)

= 2(12) + 2(60) + 2(20)

= 24 + 120 + 40

= 184 m²

gizmo_the_mogwai [7]2 years ago

5 0

Answer:

184

Step-by-step explanation:

A = 2(wl+hl+hw) = 2 · (6 · 2 + 10 · 2 + 10 · 6) = 184

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2 years ago

A hovercraft takes off from a platform.

lubasha [3.4K]

Answer:

81 meters.

Step-by-step explanation:

The height (in meters), h(x) of a hovercraft x seconds after takeoff, is modeled by:

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We substitute x=0 to solve for h.

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3 years ago

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mrs_skeptik [129]

Option c. is the correct answer.

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3 years ago

Find the solution of the differential equation dy/dt = ky, k a constant, that satisfies the given conditions. y(0) = 50, y(5) =

irga5000 [103]

Answer: The required solution is $y=50e^{0.1386t}.$

Step-by-step explanation:

We are given to solve the following differential equation :

$\dfrac{dy}{dt}=ky~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)$

where k is a constant and the equation satisfies the conditions y(0) = 50, y(5) = 100.

From equation (i), we have

$\dfrac{dy}{y}=kdt.$

Integrating both sides, we get

$\int\dfrac{dy}{y}=\int kdt\\\\\Rightarrow \log y=kt+c~~~~~~[\textup{c is a constant of integration}]\\\\\Rightarrow y=e^{kt+c}\\\\\Rightarrow y=ae^{kt}~~~~[\textup{where }a=e^c\textup{ is another constant}]$

Also, the conditions are

$y(0)=50\\\\\Rightarrow ae^0=50\\\\\Rightarrow a=50$

and

$y(5)=100\\\\\Rightarrow 50e^{5k}=100\\\\\Rightarrow e^{5k}=2\\\\\Rightarrow 5k=\log_e2\\\\\Rightarrow 5k=0.6931\\\\\Rightarrow k=0.1386.$

Thus, the required solution is $y=50e^{0.1386t}.$

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

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