Question

Find the value of X to the nearest tenth. Answer options: 10.5, 9.9, 10.1, 8.9.

Answer 1

Answer:

9.9

Step-by-step explanation:

To find the value of x, we use the Pythagorean Theorem.

$a^{2}+b^{2}=c^{2}$

a = x

b = 15

c = 18

$x^{2}+15^{2}=18^{2}$

$x^{2} + 225 = 324$

$x^{2}=342-225$

$x^{2}=99$

$\sqrt{x^{2} }=\sqrt{99}$

$x=9.95$

Answer 2

Answer:

9.9

Step-by-step explanation:

Given the right angle triangle, we simply apply Pythagoras theorem to determine the length of the remaining side x;

x^2 = 18^2 - 15^2

x^2 = 99

x = sqrt(99) = 9.9