[worth: 30 points]
what is the value of x?
enter your answer in the box.
x = __

Step-by-step explanation:

A^2+B^2=C^2

12^2+B^2=13^2

144+B^2=169

B^2=25

B=5

x = 5

Step-by-step explanation:

Applying the Pythagorean Theorem to this equation is a very good idea:

Formula for Pythagorean T. - a2 + b2 = c2

We know what one 'leg'  and they're asking us what the other one is

We also know that the hypotenuse is 13 since it is in the biggest side of the triangle

Let's solve with what we know:

a² + b² = c²

a² + 12² = 13²

a² + 144 = 169

        a² = 169 - 144

        a² = 25

        a= √25

        a = 5

So the answer for our missing 'leg' is 5

Hope this helps

pls refer ro the top for answer

b

step-by-step explanation:

the equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (0, 4) and (x₂, y₂ ) = (3, - 5) ← 2 points on the line

m = = = - 3

with m = - 3 and (a, b) = (3, - 5), then

y - (- 5) = - 3(x - 3), that is

y + 5 = - 3(x - 3) → b