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3 years ago

Identify whether each cube root or square root lies between 4 and 5 or 8 & 9

Mathematics

1 answer:

nydimaria [60]3 years ago

7 0

√78 is between 8 and 9
∛101 is between 4 and 5
∛80 is between 4 and 5
√20 is between 4 and 5
∛600 is between 8 and 9

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Make up equations for two lines that intersect at (4,1).

telo118 [61]

Answer:

y=1

x=4

hope this helps!

if you graph these equations, they will intersect at (4,1). They look very short because they are vertical and horizontal.

Step-by-step explanation:

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3 years ago

The x - coordinate of B' is _____<br> . The y - coordinate of B' is _____<br><br> please help ;-;

Ilya [14]

Answer:

B' (2, 5 )

Step-by-step explanation:

Under a counterclockwise rotation about the origin of 270°

a point (x, y ) → (y, - x ) , then

B(- 5, 2 ) → B' (2, 5 )

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3 years ago

Which is the best description for the lines i and k?

Alborosie

Choice D, perpendicular is when the slopes are inverted to each other such as 1/2 and -2/1

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4 years ago

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Annette [7]

Answer:

Step-by-step explanation:

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3 years ago

Evaluate the given integral by changing to polar coordinates. sin(x2 y2) dA R , where R is the region in the first quadrant betw

alexira [117]

Answer:

I = 1.47001

Step-by-step explanation:

we have the function

$f(x,y)=sin(x^2y^2)\\$

In polar coordinates we have

$x=rcos\theta\\y=rsin\theta$

and dA is given by

$dA=rdrd\theta$

Hence, the integral that we have to solve is

$I=\int \limt_2^4 \int \limit_0^{\pi /2}sin(r^4cos^2\theta sin^2\theta)rdrd\theta$

This integral can be solved in a convenient program of your choice (it is very difficult to solve in an analytical way, I use Wolfram Alpha on line)

I = 1.47001

Hope this helps!!!

7 0

3 years ago