The temperature of a freezer is never greater than -2 celsius. yesterday the temperature was at -10 celsius, but it increased at a steady rate of 1.5 celsius per hour. how long in hours and minutes did the temperature increase inside the freezer?

13.5

Step-by-step explanation:

First I thought of all the answers,10, 2 and 1.5.

The added them all together.

my guess would be b and d, but i didn’t actually get out the pen and paper. lol

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.