Find the length arc of DB. Leave your answer in terms of pi.

Length of arc DB = 14 π feet

Solution:

Radius AB = 18 feet

DC is the diameter of the circle.

∠CAB = 40°

Sum of the adjacent angles in a straight line = 180°

m∠DAB + m∠CAB = 180°

m∠DAB + 40° = 180°

Subtract 40° from both sides.

m∠DAB = 140°

To find the length of arc DB:

= feet

Length of arc DB = 14 π feet

on a coordinate grid, point a is at (−4.0, −2.4) and point b is at (4.0, −2.4). point b is a reflection of point a across the –axis. input either a lowercase x or i think is the right awnser

step-by-step explanation:

when rotating a figure 180 degrees, imagine that you are able to take the figure and turn it clockwise or counterclockwise around a center point. to rotate a figure 180 degrees, you will need to apply the rule (x, y) → (-x, -y). start by using a coordinate grid with coordinates for each vertex of the figure. the center point of the coordinate grid is located at (0, 0), which is what you will rotate the figure around. write down the original coordinates of the shape you are going to rotate. then, apply the rule. for example, coordinate (1, 2) becomes (-1, -2). another example would be, coordinate (-4, -2) becoming (4, 2). after you change each original coordinate to the rotated coordinate, you will draw your new figure.

step-by-step explanation: