Carmine buys 9 plates for $2 each. He also buys 10 bowls. Each bowl costs twice as much as each plate. The store is having a sale that gives Carmine $4 off the total cost of the bowls.
Which numerical expression shows how much he spent?
A
(9 * $2)+((10 $4) - $4]
B
(9 * $2)+(10 ($18 - $4)]
C
(9 * $10) + [(10 $4) - $4]
(9* $2)+((10 x $18) - $4)
Please help will give brainliest answer!

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225

answer:   the paragraph proof is mentioned below.

step-by-step explanation:

given: in a δxwy where

such that, ∠wzx ≅ ∠yzx and zw≅zy

we have to prove that: segment zx is a perpendicular bisector of segment wy.

prove: since, zw≅zy ⇒ ∠wzy is a supplementary angle.

then, ∠wzy= 180°

⇒∠wzx + ∠yzx = 180° ( because xz divides ∠wzy into two parts)

but, ∠wzx ≅ ∠yzx ( given)

⇒∠wzy+∠wzy=180° ( by substitution)

⇒2∠wzy=180°

⇒∠wzy=90°

⇒∠wzy=∠yzx =90°

therefore, xz⊥wy where wz=zy

⇒zx is a perpendicular bisector of wy.