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3 years ago

Answer the equations: 1. 4x+16 2. 8 + 4x+8 3. x+8+x 4. 4+2x+4 5. x+1+2x+8

Mathematics

2 answers:

Aleks04 [339]3 years ago

5 0

So I checked this guys work seems pretty accurate

andrew-mc [135]3 years ago

3 0

Answer:

Answers below

Step-by-step explanation:

1) 4 (x+4)

2) 4x + 16

3) 2x+8

4) 2x+8

5) 3x+9

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2, -6, 18, __, 162, __, ...

Semmy [17]

Answer:

-54, 162, -486

Step-by-step explanation:

You multiply the number in front by -3.

2*-3=-6

-6*-3=18

18*-3=-54

-54*-3=162

162*-3=-486

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-Hope this helps!-

-Good Luck!-

7 0

3 years ago

Find the length of the curve. R(t) = cos(8t) i + sin(8t) j + 8 ln cos t k, 0 ≤ t ≤ π/4

arsen [322]

we are given

$R(t)=cos(8t)i+sin(8t)j+8ln(cos(t))k$

now, we can find x , y and z components

$x=cos(8t),y=sin(8t),z=8ln(cos(t))$

Arc length calculation:

we can use formula

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

$x'=-8sin(8t),y=8cos(8t),z=-8tan(t)$

now, we can plug these values

$L=\int _0^{\frac{\pi }{4}}\sqrt{(-8sin(8t))^2+(8cos(8t))^2+(-8tan(t))^2} dt$

now, we can simplify it

$L=\int _0^{\frac{\pi }{4}}\sqrt{64+64tan^2(t)} dt$

$L=\int _0^{\frac{\pi }{4}}8\sqrt{1+tan^2(t)} dt$

$L=\int _0^{\frac{\pi }{4}}8\sqrt{sec^2(t)} dt$

$L=\int _0^{\frac{\pi }{4}}8sec(t) dt$

now, we can solve integral

$\int \:8\sec \left(t\right)dt$

$=8\ln \left|\tan \left(t\right)+\sec \left(t\right)\right|$

now, we can plug bounds

and we get

$=8\ln \left(\sqrt{2}+1\right)-0$

so,

$L=8\ln \left(1+\sqrt{2}\right)$ ..............Answer

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3 years ago

Constituents cuckoo chip<br><br> Watchu know ab Rollin down in the deep

liq [111]

Answer:

LOL

Step-by-step explanation:

3 0

3 years ago

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Use properties to find sum or product of 4 + (6+21)

Maurinko [17]

You need to use pemdas so first you do inside the parenthesis 6+21=27 then you add 4 27+4=31 that is your answer

4 0

3 years ago

Solving quadratic equation by extracting square roots x2 - 100 = 0

hichkok12 [17]

Answer:

$x=+-10$

Step-by-step explanation:

$x^2=100\\\sqrt{x^2}=\sqrt{100}\\x=+-10$

5 0

3 years ago

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