A large plot of land is shaped like a trapezoid, ABCD, where AB is parallel to CD, AB = 12 km and CD = 8 km. The diagonal BD of the trapezoid is equal to 10 km. The internal angle ABD is equal to 58º. D 8 km С
D 10 km B
Angle B is 58
А 12 km B
Let a new point, H, be a point on AB closest to D.

(a) Calculate the distance from H to D.
(b) Calculate the length of AD.
(c) Calculate the size of the angle DÂB. A landowner estimates that the length of AD is equal to 11.5 km.
(d) Calculate the percentage error in the landowner's estimate.

The landowner decides to install cone-shaped concrete bollards along the perimeter of the plot of land. The bollards are to be installed at a distance of 100 m from each other. The radius of the base of each bollard is 20 cm and the height of each bollard is 40 cm.

(e) Calculate the volume of one of the bollards. (f) Calculate the total volume of concrete needed to install all the bollards.​

since proposition states that a number is greater than 25, if is true then the number must actually be greater than 25.

this implies that all possible options, except 24, can be accepted

hi there! my name is zalgo and i am here to you out today. the answer is pretty simple (in a way). this equation equals to 25.2!

i hope this answer !

"stay and stay proud! " - zalgo

1. sometimes

2.   never

3   .08c = 7.50+.05c   250 pages

step-by-step explanation:

1.   sometimes

the theoretical probability of rolling a 1 is 1/6.   perhaps you got really lucky and never rolled a 1   in those 60 times.   your experimental probability is 0.   or perhaps you rolled a 1   20 times.   your experimental probability is 20/60 is 1/3.     it really just depends on how you rolled in that experiment.

2.   never

the probability of the event occurring is 1.   that is being 100 % sure it will happen.   that is the maximum amount of confidence we have.

3.   no customer card cost:   .08 times number of pages

customer card cost:   7.50 + .05 times number of pages

we want to find when it costs the same amount, so we will set these equal

let c = number of pages

.08c = 7.50+.05c

subtract .05c from each side

.08c-.05c = 7.5+.05c-.05c

.03c=7.5

divide each side by .03

.03c/.03 = 7.5/03

c =250  

the cost is the same at 250 pages