Question

PLS EXPLAIN I NEED HELP

Answer 1

Answer x = 20

Explanation:

Givens

c =29

a = 21

b = ?

Formula

c^2 = a^2 + b^2 Substitute the givens into the formula

Solution

29^2 = 21^2 + b^2 Expand

841 = 441 + b^2 Subtract 441 from both sides

841 - 441 = 441 +441 + b^2

400 = b^2 Take the square root of both sides.

√400 = √b^2

20 = b

Answer

x = 20

Answer 2

Answer: x = 20 units

Explanation:

Since this is a right triangle, we can use the Pythagorean theorem (c is the hypotenuse and a & b are the legs.);

a² + b² = c²

a² + b² = c²

(21)² + (x)² = (29)²

441 + (x)² = 841

(x)² = 400

x =
`√(40)` = 20