Question

15 POINTS!!!!!!! PLEASE HELP!!

Find the value of a.
A) 3
B) 4
C) 6
D) 9

Answer 1

The correct answer is a.) 3.

Explanation:

Since we know that b = 4, and c = 5, we can use the pythagoras theorem to solve this question. a^2 + b^2 = c^2.

Substitute the values a^2 + 4^2 = 5^2.
Simplify: a^2 + 16 = 25.

Subtract 16 on both sides: a^2 = 9.

Square root each side to get a = 3.

Answer 2

Explanation:

The legs and hypotnuse of a triangle can easily be solved by using

`A^(2) +B^(2) =C^(2)`

with this in mind we can plug in the legs and hypotenuse of the triangle to solve for the missing leg, A.

`A^(2) =C^(2) -B^(2) \\A = \sqrt{(5^(2) )-(4^(2)) } \\A=√(9) \\A=3`

Hope this helps,

H.M.