Question

Nisha stands at the edge of an aquarium 3.0 m deep. She
shines a laser at a height of 1.7 m that hits the water of the pool
8.1 m from the edge. How far from the edge of the pool will the light hit bottom?

Answer 1

It's denoting to a right angle traingle

• Perpendicular=P=3+1.7=4.7m
• Base=B=8.1m

Hypotenuse we need

Apply Pythagorean theorem

• H²=P²+B²
• H²=4.7²+8.1²
• H²=87.7
• H=9.4m

Answer 2

Explanation:

The graph of y = √x is reflected in the y-axis, is horizontally stretched by a factor of 2, shifted 3 units up and 1 unit left. What is the equation of the transformed graph?

Original: y = √(x)

Reflected in the y-axis: y = √(-x)

Horizontally stretched by a factor of 2: y = √(-x/2)

Shifted 3 units up: y = 3 + √(-x/2)

And 1 unit left: y = 3 + √(-(x+1)/2)