<img src="https://tex.z-dn.net/?f=%20%7B3x%7D%5E%7B2%7D%20-%203x%20-%205%20%3D%200" id="TexFormula1" title=" {3x}^{2} - 3x

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katrin2010 [14]

3 years ago

0" alt=" {3x}^{2} - 3x - 5 = 0" align="absmiddle" class="latex-formula">

Mathematics

2 answers:

My name is Ann [436]3 years ago

4 0

Use this formula=
also identify which one is a,b and c
ax^2 + bx + c

Soloha48 [4]3 years ago

3 0

The Answer is 69 I hope it is correct

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Evaluate the surface integral ∫sf⋅ ds where f=⟨2x,−3z,3y⟩ and s is the part of the sphere x2 y2 z2=16 in the first octant, with

skad [1K]

Parameterize S by the vector function

$\vec s(u,v) = \left\langle 4 \cos(u) \sin(v), 4 \sin(u) \sin(v), 4 \cos(v) \right\rangle$

with 0 ≤ u ≤ π/2 and 0 ≤ v ≤ π/2.

Compute the outward-pointing normal vector to S :

$\vec n = \dfrac{\partial\vec s}{\partial v} \times \dfrac{\partial \vec s}{\partial u} = \left\langle 16 \cos(u) \sin^2(v), 16 \sin(u) \sin^2(v), 16 \cos(v) \sin(v) \right\rangle$

The integral of the field over S is then

$\displaystyle \iint_S \vec f \cdot d\vec s = \int_0^{\frac\pi2} \int_0^{\frac\pi2} \vec f(\vec s) \cdot \vec n \, du \, dv$

$\displaystyle = \int_0^{\frac\pi2} \int_0^{\frac\pi2} \left\langle 8 \cos(u) \sin(v), -12 \cos(v), 12 \sin(u) \sin(v) \right\rangle \cdot \vec n \, du \, dv$

$\displaystyle = 128 \int_0^{\frac\pi2} \int_0^{\frac\pi2} \cos^2(u) \sin^3(v) \, du \, dv = \boxed{\frac{64\pi}3}$

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2 years ago

If x+3/3 = y+2/ 2 , then x/3 = _____.

iren [92.7K]

the question is not so clear

is it (x+3)/3 or what you have written is correct

Step-by-step explanation:

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3 years ago

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Rama09 [41]

Answer:

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Step-by-step explanation:

(2,-5) (9,3)

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3 years ago

if angle RZT=110, angle RZS=3s, and angle TZS=8s, what are angle RZS and angle TZS?

skelet666 [1.2K]

8s-3s=5s
5s=110
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TZS= 8s = 8(22) = 176

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3 years ago

If you are currently making 6.75 per hour and you’re offered a new job that pays 7.47 per hour how much more would you make per

Nikolay [14]

Answer:

$0.72

Step-by-step explanation:

You are contrasting the numbers, so that means you are subtracting. When you subtract, the larger number goes on top..

7.47 - 6.75 = ?

So then you subtract and get $0.72.

I will make $0.72 more than I was at my current job.

-Mabel <3

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3 years ago