9. Sarah saves $200 in her bank account for 3 years at a 5% interest rate. How much interest does she earn?

The amount of interest she earns is: $30

Step-by-step explanation:

Given

To determine

Interst I = ?

Using the equation to determine the interest amount

substitute P = 200, r = 0.05 and r = 3

$

Therefore, the amount of interest she earns is: $30

i think it will be zero as slope has a formula of difference between initial and final distance divided by itz time interval

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.