Data was collected for 300 fish from the North Atlantic. The length of the fish (in mm) is summarized in the GFDT below.   Lengths (mm)     Frequency   40 - 54155 - 691670 - 847185 - 99108100 - 11483115 - 12918130 - 1443

What is the lower class boundary for the first class?

class boundary = 

Step-by-step explanation:

Triangle ABC is a right angle triangle.

From the given right angle triangle,

AC represents the hypotenuse of the right angle triangle.

With m∠A as the reference angle,

AB represents the adjacent side of the right angle triangle.

BC represents the opposite side of the right angle triangle.

To determine m∠A, we would apply

the sine trigonometric ratio.

Cos θ, = opposite side/hypotenuse. Therefore,

Sin A = 13/15 = 0.87

∠A = Sin^-1(0.87)

∠A = 60.5 to the nearest tenth.