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3 years ago

4. An app developer projects that he will earn

Mathematics

1 answer:

Thepotemich [5.8K]3 years ago

5 0

I think this is it 20.00(8)=x

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Please help me with the below question.

o-na [289]

Given that

$\vec r(t) = \left\langle 4t e^{-t}, 8 \arctan(t), 8 e^t \right\rangle$

we first differentiate with respect to t to get the tangent vector, $\vec T(t)$ :

$\vec T(t) = \dfrac{d\vec r}{dt} = \left\langle (4-4t) e^{-t}, \dfrac8{1+t^2}, 8e^t \right\rangle$

At t = 0, the tangent vector is

$\vec T(0) = \left\langle 4, 8, 8 \right\rangle$

To get the <em>unit</em> tangent vector, multiply this by 1/(norm of tangent vector) :

$\|\vec T(0)\| = \sqrt{4^2 + 8^2 + 8^2} = \sqrt{144} = 12$

Then the unit tangent vector is

$\dfrac{\vec T(0)}{\|\vec T(0)\|} = \left\langle \dfrac4{12}, \dfrac8{12}, \dfrac8{12}\right\rangle = \boxed{\left\langle\dfrac13, \dfrac23, \dfrac23\right\rangle}$

7 0

2 years ago

1# Find the missing variable (s). Round to the nearest tenth.

8_murik_8 [283]

Answer:

7.9

Step-by-step explanation:

The mnemonic SOH CAH TOA reminds you of the relationship of the hypotenuse and the side opposite an angle:

... Sin = Opposite/Hypotenuse

For your geometry, this is ...

... sin(21°) = x/22

Multiplying by 22 gives ...

... x = 22·sin(21°) ≈ 7.9

5 0

3 years ago

Consider the graphic the linear equation 2x-5y=10

erica [24]

The answer is y=2/5x-2

3 0

3 years ago

Could someone please explain how to solve

NemiM [27]

Yogirlnikki sorry i can not see.

6 0

4 years ago

643=4x160+n write what n represents in the division problem

marissa [1.9K]

643=4x160+n =that is the problem
n=3

4 0

3 years ago