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Karo-lina-s [1.5K]
3 years ago
10

What is the image point (4,5) after a rotation 90 degrees counterclockwise about the origin

Mathematics
1 answer:
dybincka [34]3 years ago
4 0

Answer:

A'=(-5,4)

Step-by-step explanation:

The original point, (x,y), becomes (-y,x).

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two wheels are rolled simultaneously. The radius of the smaller wheel is r feet and the radius of the larger wheel 2r feet. If b
Nuetrik [128]
The circumference of a circle is C=2πR, where R is the radius of the circle and π≈3.14.

So if we open the circumference of the circle into a straight line segment, the length of this segment is C=2πR≈2*3.14*R=6.28R

4 rotations mean 4 circumferences that is 4 segments of length 6.28R, 
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i: the radius of the smaller wheel is R=r, thus it covers a distance of 25.12r feet

ii: the radius of the smaller wheel is R=2r, thus it covers a distance of  25.12*2r=50.24r (feet)

50.24r is twice 25.12r, thus the larger wheel traveled Twice the distance of the smaller one.


Answer: the larger covered twice the distance of the smaller.
6 0
3 years ago
I need help with this as soon as possible please
Shalnov [3]

Answer:

\sqrt{3}

Step-by-step explanation:

the slope m = tan60° = \sqrt{3}

3 0
4 years ago
Read 2 more answers
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