Lines m and n are perpendicular. if the slope of m is zero, then the slope of n is
zero
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negative

When two lines are perpendicular to each other, then the product of slopes of both lines is equal to “-1”.

Let the slope of line “m” is n1 and slope of line “n” is n2, then ;

n1 x n2 = -1

As per question conditions, n1 = 0;

So n2 = -1/0

Hence n2 = undefined. Thus 2nd option is correct. 

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Step-by-step explanation:

i believe the correct answer is b.

so a parallelogram is just like a square base times height. multiply 40 and 39 to get 1560 inches.

a triangle is base times height divided by two. so multiply 7.9 and 5 and then divide it by 2 to get 19.75inches.

the kite can be split into two separate triangles and added together to get the total area. 30 x 4 /2 which equals 60. make sure to double it for the two triangles making 120.