Question

Round your answer to the tenths place!!

Answer 1

Answer: OPTION B.

Step-by-step explanation:

Given the formula:

$d=\sqrt{w^2+h^2}$

We need to solve for "h":

$d^2=(\sqrt{w^2+h^2})^2\\\\d^2=w^2+h^2\\\\d^2-w^2=h^2\\\\h=\sqrt{d^2-w^2}$

In this case we can identify in the figure that:

$d=13.3in\\w=11.3in$

Therefore, substituting values, we get that the height of the laptop screen (rounded to the nearest tenth) is:

$h=\sqrt{(13.3in)^2-(11.3in)^2}\\\\h=7.0in$  

Answer 2

For this case we apply the Pythagorean theorem, clearing the height we have:

$h = \sqrt {d ^ 2-w ^ 2}$

According to the data we have:

$d = 13.3 \ in\\w = 11.3 \ in$

Substituting:

$h = \sqrt {(13.3) ^ 2- (11.3) ^ 2}\\h = \sqrt {176.89-127.69}\\h = \sqrt {49.2}\\h = 7.014$

We round and we have the height is$7.0 \ in$

Answer:

Option B