Please help me fast

Greetings.

The answer is x = 5.

Explanation:

We can solve for x-term by using Pythagorean Theorem.

We only remember that c-term is the opposite side of the right angle.

Meaning our x-term is the opposite of right angle.

While b-term and a-term are not that important to remember (Because of the property of addition. We can swap from a²+b² to b²+a² without any problems.)

Then we substitute a = 4, b = 3 and c = x in the equation.

From

The exponent rules -

Therefore, 4² = 4×4 = 16

3² = 3×3 = 9

You might know about Quadratic Equation. When x-term is squared, square both sides would give the constant/number both plus-minus.

However, the length/area/width for basic geometry cannot be negative.

Thus, we clear out the negative (minus away)

Thus, the answer is x = 5 (The last choice.)

Hope this helps! :)

b. astronomers