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2 years ago

PLEASE ANSWER ASAP. Find the area of the triangle QRS. Area = square units

Mathematics

2 answers:

LenKa [72]2 years ago

4 0

Answer:area is 140

Step-by-step explanation:

MaRussiya [10]2 years ago

3 0

Area = 140 square units

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ASAP! GIVING BRAINLIEST! Please read the question THEN answer correctly! No guessing.

fomenos

Answer:

C. The graph of G(x) is the graph of F(x) flipped over the y-axis and compressed vertically.

Step-by-step explanation:

The negative in front of the 2 made the function flip over the y-axis. While the 2, compressed the function a little, making it so the function touched 2, vertically.

7 0

2 years ago

Evaluate the surface integral S F · dS for the given vector field F and the oriented surface S. In other words, find the flux of

Tomtit [17]

Apparently my answer was unclear the first time?

The flux of F across S is given by the surface integral,

$\displaystyle\iint_S\mathbf F\cdot\mathrm d\mathbf S$

Parameterize S by the vector-valued function r(u, v) defined by

$\mathbf r(u,v)=7\cos u\sin v\,\mathbf i+7\sin u\sin v\,\mathbf j+7\cos v\,\mathbf k$

with 0 ≤ u ≤ π/2 and 0 ≤ v ≤ π/2. Then the surface element is

dS = n • dS

where n is the normal vector to the surface. Take it to be

$\mathbf n=\dfrac{\frac{\partial\mathbf r}{\partial v}\times\frac{\partial\mathbf r}{\partial u}}{\left\|\frac{\partial\mathbf r}{\partial v}\times\frac{\partial\mathbf r}{\partial u}\right\|}$

The surface element reduces to

$\mathrm d\mathbf S=\mathbf n\,\mathrm dS=\mathbf n\left\|\dfrac{\partial\mathbf r}{\partial u}\times\dfrac{\partial\mathbf r}{\partial v}\right\|\,\mathrm du\,\mathrm dv$

$\implies\mathbf n\,\mathrm dS=-49(\cos u\sin^2v\,\mathbf i+\sin u\sin^2v\,\mathbf j+\cos v\sin v\,\mathbf k)\,\mathrm du\,\mathrm dv$

so that it points toward the origin at any point on S.

Then the integral with respect to u and v is

$\displaystyle\iint_S\mathbf F\cdot\mathrm d\mathbf S=\int_0^{\pi/2}\int_0^{\pi/2}\mathbf F(x(u,v),y(u,v),z(u,v))\cdot\mathbf n\,\mathrm dS$

$=\displaystyle-49\int_0^{\pi/2}\int_0^{\pi/2}(7\cos u\sin v\,\mathbf i-7\cos v\,\mathbf j+7\sin u\sin v\,\mathbf )\cdot\mathbf n\,\mathrm dS$

$=-343\displaystyle\int_0^{\pi/2}\int_0^{\pi/2}\cos^2u\sin^3v\,\mathrm du\,\mathrm dv=\boxed{-\frac{343\pi}6}$

4 0

3 years ago

What is 2y/10x equals.

andrew11 [14]

Answer:

$\frac{2y}{10x} = \frac{y}{5x}$

Good luck!

Intelligent Muslim,

From Uzbekistan.

7 0

2 years ago

Write the number in expanded form 68,020

allochka39001 [22]

Standard Form:

68,020

Expanded Notation Form:

68,020 =

60,000

+ 8,000

+ 0

+ 20

+ 0

Expanded Factors Form:

68,020 =

6 × 10,000

+ 8 × 1,000

+ 0 × 100

+ 2 × 10

+ 0 × 1

Expanded Exponential Form:

68,020 =

6 × 10^4

+ 8 × 10^3

+ 0 × 10^2

+ 2 × 10^1

+ 0 × 10^0

Word Form:

68,020 =

sixty-eight thousand twenty

4 0

2 years ago

Ahh i hate math fr someone help

Dmitry_Shevchenko [17]

I think C but probably try to find something to back it up
All you gotta do is divide the pound by the cost

6 0

2 years ago