One day, a person went to a horse racing area. Instead of counting the number of humans an horses, he conuted 74 heads and 196 l
1 answer:
You have two unknowns - the number of people (P) and the number of horses (H). You can set up two equations to solve for these two unknowns. Every person and every horse has 1 head, so:
Also, every person has 2 legs but every horse has 4 legs, so:
We can now solve by rearranging the first equation (H = 74 - P), and subbing that value into the second equation:
Also, every person has 2 legs but every horse has 4 legs, so:
We can now solve by rearranging the first equation (H = 74 - P), and subbing that value into the second equation:
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We are given coordinates of the triangle: A(2,2), B(7,1) and C(8,-4).
We need to rotated 90° counterclockwise about the origin.
In order to find the new coordinates of rotatation 90°counterclockwise about the origin, we can apply rule (h, k) ---> (-k,h).
Where (h,k) are the coordinates of original image on axes and (-k,h) are the coordinates of rotated image.
In resulting coordinates of the image first swap the x and y coordinates of the original image and then make the sign opposite of each x-coordinate.
On applying rule (h, k) ---> (-k,h), we get
A(2,2) --> A'(-2,2)
B(7,1) --> B'(-1,7)
C(8,-4) --> C'(4,8)
