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yaroslaw [1]
3 years ago
11

Simplify 4√6/√30 by ratipnalizing the denominator. Show your work.

Mathematics
1 answer:
Gwar [14]3 years ago
4 0
Radical 30 can be separated into radical 5 x radical 6.

Divide both sides by radical 6, making 4/radical5.

Multiply by radical5 for a rational equation

4\sqrt{5}/5
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Evaluate the surface integral. S xz ds, s is the part of the plane 2x 2y z = 4 that lies in the first octant
maksim [4K]

The value of the given surface integral is 4.

The given plane intercepts the coordinate axes at (2, 0, 0), (0, 2, 0), and (4, 0, 0). These point are the coordinates of a triangular region that we can parameterize using.

S(u,v)=(1-u)((1-u)(2,0,0)+u(0,2,0)+u(4,0,0)\\S(u,v)=(2(1-u)(1-v),2u(1-v),4v)

<h3>What is the surface integral?</h3>

A surface integral is a generalization of multiple integrals to integration over surfaces. It can be thought of as the double integral analog of the line integral. Given a surface, one may integrate a scalar field over the surface or a vector field.

with 0≤u≤1 and  0≤v≤1. Then the surface element ds  is equivalent to

ds=\||\:\left(s_u\times \:\:S_v\right)||dudv=12\left(1-v\right)dudv

The surface integral is then

\int \:\int \:_Sxzds=12\int _0^1\:\int _0^1\:\left(2\left(1-u\right)\left(1-v\right),2u\left(1-v\right),4v\right)dvdu=4

Therefore the value of the given surface integral is 4.

To learn more about the integral visit:

brainly.com/question/14295614

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6 0
2 years ago
Preston measured the button on his shirt. Then he calculated that it has an area of 50.24 square millimeters. What is the button
soldi70 [24.7K]
*note: for this problem you have to round a few values. I rounded to 2 decimal places, but your answer could be different if you have to round to more/less than 2 decimal places

Answer: Diameter = 8 millimeters


Buttons are circles, so we will use the formula for area of a circle:

A = πr^2

We are solving for the diameter, which is 2 times the radius:

d = 2r

So now we plug in what we know.
The area A = 50.24 square millimeters, therefore we plug it in and simplify:

50.24 square millimeters = πr^2

50.24/π = r^2

15.99 = r^2

squareroot(15.99) = r

r = 4 millimeters

Now we use the radius to calculate the diameter.

r = 4 millimeters

d = 2r

d = 2(4)

diameter = 8 millimeters
8 0
3 years ago
Test |||
Basile [38]

Answer:

12

15

34

67

21

Step-by-step explanation:

the stuff and other do it

7 0
2 years ago
Graphing points with tables
faust18 [17]

The slope is –3.

Solution:

<u>To find the slope of the line:</u>

The given points in the table lie on a line.

Take any two points from the line.

Let the points are (0, 2) and (3, –7).

x_1=0,y_1=2,x_2=3, y_2=-7

Slope of the line formula:

$m=\frac{y_2-y_1}{x_2-x_1}

$m=\frac{-7-2}{3-0}

$m=\frac{-9}{3}

m =  –3

The slope is –3.

6 0
3 years ago
Use the picture below to answer questions 13a and 13b.
Svet_ta [14]

Answer:

13a:   Measure of angle 1 is 120 degrees

13b:   Angle 2 is 60 degrees

Step-by-step explanation:

Angle 1 is alternate exterior (so in a parallel pair they are equal) to the angle on line m given as 120 deg.

Angle 2 is 180 minus 120= 60   Sum of the two angles must equal 180.

3 0
3 years ago
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