Select each correct answer.

a) 30a + 6ad

b) (6a ⋅ 5) + (6a ⋅ d)

c) 30a + (6a ⋅ d)

d) 30ad

f) 11a + d

1 lap in 8/10 (4/5) of a minute

Answer is B, 8/10 minute! or (6a times 5)+(6a times d)

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Step-by-step explanation:

for the friend request.

when a figure, such as triangle (xyz) is reflected over the line y = x to create x'y'z' the x-coordinates and y-coordinates of the original image (pre-image) will be reversed for the image. (e.g., (x, y) > (y, x)) this means that the pre-image position of the x- and y-coordinates switch places which in turn provides a mirror like image of the original xyz.  

i notice that when i draw a line segment from x to x', that the points are parallel from each other -- they are exactly across from each other and do not intersect with any other points.  

yes, think i would see the same characteristic if you drew the line segment connecting y with the reflecting line and then y' with the reflecting line because of the essence of reflections. because it is a mirror image, each point was effected the same way which leads me to conclude that they same would apply to y and y'.