Hi!
18.49 * 5.75% = 1.063175
18.49 + 1.063175 = 19.553175 (Round to the nearest cent).
The cost (including tax) will be $19.55. Since $20 is greater than $19, the gift card will be able to cover the cost!
-8 x -2/3 =5.3333 so five point three repeating
It these triangles are similar, then the sides of the triangles are in proportion:
<em>cross multiply</em>
<em>use distributive property</em>
<em>subtract 10y from both sides</em>
<em>divide both sides by 5</em>
<em>cross multiply</em>
<em>divide both sides by 8</em>
<span>π = C / 10 ( the is 10 because diameter = 2 * radius)</span>