2 years ago

NEED HELP NOW

Mathematics

2 answers:

netineya [11]2 years ago

8 0

Answer:

if u add -3 to 11 you get 8 so go -3

Step-by-step explanation:

i told you

natima [27]2 years ago

3 0

It’s -1 they are subjecting by 2

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When 3.7 is added to 6 times a number the result is 52.3 find the number

cluponka [151]

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Hope this helped :)

6 0

3 years ago

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]

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

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