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2 years ago

<5 is a supplementary of <6 , and m<5=78 , find m<6

Mathematics

1 answer:

irakobra [83]2 years ago

3 0

Answer:

m<6 is 102°

Step-by-step explanation:

Angles that are supplementary are equal to a total of 180°.

Subtract the 78 from the 180 to find your answer.

180-78=102

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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

If f(x)=5x^2-8, what is the value of F(-3)?

mr Goodwill [35]

Answer:

F(-3)=5(-3)^2-8

=37

Step-by-step explanation:

Get it?

8 0

2 years ago

Solve for a 5/a - 2/1-a = 2/a-1 a=0 a=-1 a=1 none

podryga [215]

Hello :
$\frac{5}{a} - \frac{2}{1-a} = \frac{2}{a-1} = \frac{5}{a}+ \frac{2}{a-1} = \frac{2}{a-1}
= \frac{5(a-1)+2a}{a(a-1)} = \frac{2a}{a(a-1)} 
(a \neq 1 , a \neq 0)
$
5a-5 +2a =2a
5a =5
a=1 ( refused)
conclusion : none

8 0

3 years ago

What is the area of the kitchen floor in this floor plan?

Illusion [34]

The answer is A=lw
A=(5)(7)
A= 35 ^meters

6 0

3 years ago

Read 2 more answers

John needs 7 gallon bottles of water to fill 90water balloons how many gallon bottles of water does John need to purchase to fil

Allushta [10]

Answer:

11 bottles

Step-by-step explanation:

make a proportion because if you're using the same rate proportions can show that it's equal

$\frac{7}{90} = \frac{x}{140}$

cross multiply

$7 *140$ $= 980$

divide the answer by 90 to find x

$980/90= 10.8$

round to 11 because you can't have 10.8 bottles

8 0

2 years ago