What is the value of x? round to the nearest tenth.

x =21.4

Step-by-step explanation:

Since this is a right triangle, we can use the Pythagorean theorem

a^2 b^2 =c^2

The leg are a and b and the hypotenuse is c.

In the triangle pictured, the legs are x and 18 and the hypotenuse is 28

x^2+18^2 =28^2

x^2 +324 =784

Subtract 324 from each side

x^2 +324-324 = 784-324

x^2 =460

Take the square root of each side

sqrt(x^2) = sqrt(460)

x =21.44761059

Rounding to the nearest tenth

x =21.4

step-by-step explanation: