## Seth is using the figure shown below to prove Pythagorean Theorem using triangle similarity. In the given triangle ABC, angle A is 90o and segment AD is perpendicular to segment BC. Which of these could be a step to prove that BC2= AB2 + AC2? Triangle ADC is similar to triangle BAC by the SAS similarity theorem. Triangle ADB is similar to triangle CDA by the SAS similarity theorem. Triangle ADC is similar to triangle BAC by the AA similarity theorem. Triangle ADB is similar to triangle CDA by the AA similarity theorem.

October 13, 2019// Blog//

**Answer:**

**Option (b) is correct.**

**The monthly bill if we uses 50 additional minutes this month is $ 55**

**Step-by-step explanation:**

Given: Your new cell phone plan charges $50 per month for 400 minutes of talk time. The plan charges $0.10 for each additional minute you talk.

We have to find the monthly bill if we uses 50 additional minutes this month.

Consider the given plan.

cell phone plan charges $50 per month for 400 minutes of talk time. The plan charges $0.10 for each additional minute you talk.

Let the monthly charge be y and x be the number of additional minutes.

So, the equation becomes,

y = 50 + 0.10(x)

For, The given month the additional minutes are 50.

so, y = 50 + 0.10(50) = 55

**Therefore, The monthly bill if we uses 50 additional minutes this month is $ 55**