Answer:
The original cost is $59.82
Step-by-step explanation:
x(1.3)=77.77
x=59.82
Answer:i tried
Step-by-step explanation:
In the figure we have three right angles .The triangles similar to each other .Similar triangles have sides in proportion .The altitude rule is true for the triangles .
The theorem states :The altitude to the hypotenuse of a right triangle is the mean proportional between the segments into which it divides the hypotenuse.
![\frac{part of hypotenuse}{altitude} =\frac{altitude}{other part hypotenuse }](https://tex.z-dn.net/?f=%20%5Cfrac%7Bpart%20of%20hypotenuse%7D%7Baltitude%7D%20%3D%5Cfrac%7Baltitude%7D%7Bother%20part%20hypotenuse%20%7D%20%20)
Substituting the values from the triangles we ahve:
![\frac{r}{h} =\frac{h}{s}](https://tex.z-dn.net/?f=%20%5Cfrac%7Br%7D%7Bh%7D%20%3D%5Cfrac%7Bh%7D%7Bs%7D%20%20)
s is the right answer