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2 years ago

Can somebody help me please-

Mathematics

1 answer:

arsen [322]2 years ago

3 0

Answer:

Step-by-step explanation:

volume=9×3×4+6×3×4+3×3×4=(9+6+3)×3×4=18×12=216 yd³

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C=5/9(F-32) solve for F

mina [271]

<span>F= 9/5 C + 32
or
</span><span>F= 9/5(C+32)
</span> Hoped this helped:)

7 0

2 years ago

What's the length of the missing leg?<br><br>

ValentinkaMS [17]

Answer:

Step-by-step explanation:

<h2>you have to multiply 5 x 4 and then divide by 2 because that the formula for a triangle.</h2>

7 0

2 years ago

Suppose that surface σ is parameterized by r(u,v)=⟨ucos(3v),usin(3v),v⟩, 0≤u≤7 and 0≤v≤2π3 and f(x,y,z)=x2+y2+z2. Set up the sur

Bad White [126]

Looks like you have most of the details already, but you're missing one crucial piece.

$\sigma$ is parameterized by

$\vec r(u,v)=\langle u\cos3v,u\sin3v,v\rangle$

for $0\le u\le7$ and $0\le v\le\frac{2\pi}3$ , and a normal vector to this surface is

$\dfrac{\partial\vec r}{\partial u}\times\dfrac{\partial\vec r}{\partial v}=\left\langle\sin3v,-\cos3v,3u\right\rangle$

with norm

$\left\|\dfrac{\partial\vec r}{\partial u}\times\dfrac{\partial\vec r}{\partial v}\right\|=\sqrt{\sin^23v+(-\cos3v)^2+(3u)^2}=\sqrt{9u^2+1}$

So the integral of $f(x,y,z)=x^2+y^2+z^2$ is

$\displaystyle\iint_\sigma f(x,y,z)\,\mathrm dA=\boxed{\int_0^{2\pi/3}\int_0^7(u^2+v^2)\sqrt{9u^2+1}\,\mathrm du\,\mathrm dv}$

6 0

2 years ago

Simplify: log1/3 27 =

Scrat [10]

Answer:

-3

Step-by-step explanation:

log 1/3 27= 1/3^x=27 this means we have to simplify it. 1/3= 3^-1 power. Thus, (3^-1)^x=3^3. This is equal to 3^-x=3^3 therefore x=-3

5 0

3 years ago

How many hours would someone who earns 6.25 per hour have to work to earn 225.65

Mars2501 [29]

That comes to 225.65 / 6.25

= 36.1 hours

6 0

3 years ago