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borishaifa [10]

3 years ago

15

Help pls hurry find the volume

1 answer:

S_A_V [24]3 years ago

4 0

Step-by-step explanation:

hope it helps you

here is ur answer

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Let r(t)=⟨t2,1−t,4t⟩. calculate the derivative of r(t)⋅a(t) at t=5, assuming that a(5)=⟨−4,4,−5⟩ and a′(5)=⟨−5,9,3⟩

erastovalidia [21]

$\mathbf r(t)=\langle t^2,1-t,4t\rangle$
$\implies\mathbf r'(t)=\langle 2t,-1,4\rangle$

$\dfrac{\mathrm d(\mathbf r(t)\cdot\mathbf a(t))}{\mathrm dt}\bigg|_{t=5}=\mathbf r'(5)\cdot\mathbf a(5)+\mathbf r(5)\cdot\mathbf a'(5)$
$=\langle10,-1,4\rangle\cdot\langle-4,4,-5\rangle+\langle25,-4,20\rangle\cdot\langle-5,9,3\rangle$
$=(-40-4-20)+(-125-36+60)$
$=-165$

6 0

4 years ago

Which of the following is the same as 5(2 − 1)?

VLD [36.1K]

I believe it would be D

6 0

3 years ago

Complete the following. Show all work for calculations.

PilotLPTM [1.2K]

Step-by-step explanation:

Work:

V = 2m^3

2m^3 = (w)*(2w)*(h)

Possible dimensions:

length width height surface area

2 1 1 8 units^2

1 1/2 4 12.5 units^2

1/2 1/4 16 24 1/8 units^2

4 0

3 years ago

A student creates a table of the equation y = 5x + 8. The student begins the table as shown below. Which shows the correct headi

SVEN [57.7K]

Answer:

1

Step-by-step explanation:

Column A=X the first value for x is 1

Column B has the x value replaced in the equation 5x+8. 5(1) + 8

Column C has the result, y=13

3 0

3 years ago

HelloI need some assistance with this question. I provided an answer, but it was incorrect. The images are enclosed.

ycow [4]

Given:

There are given that the zeroes and degrees of the polynomial:

$\begin{gathered} \text{zeros:}-2,2,4 \\ \text{Degres:}3 \end{gathered}$

Explanation:

From the concept of a polynomial:

A polynomial has a as zero if and only if (x -a) is a factor of the polynomial.

Then,

From the given polynomial:

$f(x)=(x+2)(x-2)(x-4)$

Then,

$\begin{gathered} f(x)=(x+2)(x-2)(x-4) \\ f(x)=(x^2-2x+2x-4)(x-4) \\ f(x)=(x^2-4)(x-4) \\ f(x)=x^3-4x^2-4x+16 \end{gathered}$

Final answer:

Hence, the polynomial is shown below:

$f(x)=x^3-4x^2-4x+16$

6 0

2 years ago