for 10 x = 28.
8x-44=180
+44. +44
8x=224
224/8=28
This is all I can do for now, I might be back to solve the rest, I’m sorry.
Answer:
Step-by-step explanation:
<u>Given</u>
<u>Area of the mirror:</u>
- A = πr²
- A = 3.14*23² = 1661 in²
None of the choices is correct
Since AB = CD the trapezoid is isosceles, which means that ∡A = ∡D
Therefore also ∡2 = ∡3 (they are half of the congruent angles)
For the properties of parallel lines (BD and AD) crossed by a transversal (BD) we have ∡3 = ∡CBD.
Now consider triangles AOD and BCD:
∡OAD (2) = ∡ADO (3) = ∡CBD (3) = ∡CDB (4)
T<span>he sum of the angles of a triangle must be 180°, t</span>herefore:
∡AOD = 180 - ∡2 - ∡3
∡BCD = 180 - ∡3 - ∡4
∡AOD = ∡BCD because their measure is the difference of congruent angles.