Algebra 1B Unit 4 lesson 8 Help!!!!!!

1. What is the side length b in the triangle below?
A. 625
B. 25
C. 22.96
D. 527

Question

Algebra 1B Unit 4 lesson 8  Help!!!!!!

1.   What is the side length b in the triangle below?
A. 625
B. 25
C. 22.96
D. 527

anonymous · Answer

attachment

mathstudent55 · Answer

Since you have a right triangle, you can use the Pythagorean Theorem.

$a^2 + b^2 = c^2$

mathstudent55 · Answer

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anonymous · Answer

ok I have no idea how to do that @mathstudent55

mathstudent55 · Answer

In your problem, a is 5, and c is 13.
You need b.
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mathstudent55 · Answer

Now you substitute the values you have for a and c in the equation of the Pythagorean theorem, and you solve for b.

mathstudent55 · Answer

$a^2 + b^2 = c^2$

$5^2 + b^2 = 13^2$

What is $5^2$ ?
What is $13^2$ ?