2 years ago

PLEASE HELP ASAP GIVING 94 POINTS

Mathematics

2 answers:

prohojiy [21]2 years ago

8 0

Answer:

ITS 2

Step-by-step explanation:

PART A: EVERY TIME YOU GO UP 2, YOU GO UP 12

PART B: 8-6=2

tigry1 [53]2 years ago

6 0

Answer:

A: Every time you go up 2 bushels, you go up 16 dollars.

B: 4 dollars more. Work: 16 - 12.

Step-by-step explanation:

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3 years ago

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3 years ago

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Leviafan [203]

we are given

$r(t)=(7t,3cos(t),3sin(t))$

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now, we can use arc length formula

$L=\int\limits^a_b {\sqrt{(x')^2+(y')^2+(z')^2} } \, dt$

now, we can find derivative

$x'=7,y'=-3sin(t),z'=3cos(t))$

now, we can plug values

and we get

$L=\int _{-2}^2\sqrt{7^2+\left(-3\sin \left(t\right)\right)^2+\left(3\cos \left(t\right)\right)^2}dt$

$L=\int _{-2}^2\sqrt{7^2+9}dt$

$=\sqrt{58}\cdot \:2-\left(-2\sqrt{58}\right)$

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3 years ago