Answer:
z
Step-by-step explanation:
WX and ZY make up the legs, as illustrated in the diagram.
Since it is an isosceles trapezoid, the legs are congruent; that means
6<em>x</em> + 5 = 8<em>x</em> - 3
When solving this equation, we do not want a variable on both sides. We will cancel the 6<em>x</em> to avoid negatives:
6<em>x</em> + 5 - 6<em>x</em> = 8<em>x</em> - 3 - 6<em>x</em>
5 = 8<em>x</em> - 3 - 6<em>x</em>
Combine like terms:
5 = 2<em>x</em> - 3
Cancel the 3 by adding:
5 + 3 = 2<em /><em>x</em> - 3 + 3
8 = 2<em>x</em>
Cancel the 2 by dividing:
8/2 = 2<em>x</em>/2
4 = <em>x</em><em />
Answer:
C. 15
Step-by-step explanation:
A straight line equals 180°.
The angles are:
(6x + 10) +
(6x - 10)
+10 and -10, cancel each other out.
Now we are left with:
(6x) +
(6x)
6 + 6 = 12, so we have 12x
180° ÷ 12 = 15°
. 66 the 6 keeps going on and on so you can just write. 66 with a line over the second 6.
They could bye 6 books which would equal to 90$