Point b is between A and C. if AB =2x, BC =3x+1, and AC=21, find the length of BC

Step-by-step explanation:

We are here given that a point B is between A and C . Also ,

And we would like to calculate the length of BC . For figure refer to the attachment. From figure we can see that ,

Substitute the respective values,

Add like terms ,

Subtract 1 on both sides,

Simplify,

Divide both sides by 5,

Now consider ,

Plug in the value of x found above ,

Simplify,

Add,

And we are done !

( ͡° ͜ʖ ͡° ) copy and   paste it

step-by-step explanation:

the answer is (4,3)

since the rule for r0, 90º is (-y,x) and it was already applied to form the image, all you have to do is reverse the answer using this formula.