The regular hexagon to the left shows the area Kim is fencing off for her garden. Different types of angles require different types of fasteners. How many of each type of fastener does Kim need?​

Three coins are flipped. what is the probability that there will be at least two tails?

List x1, x2, x3, x4 where xi is the left endpoint of the four equal intervals used to estimate the area under the curve of f(x) between x = 4 and x = 6. a 4, 4.5, 5, 5.5 b 4.5, 5, 5.5, 6 c 4.25, 4.75, 5.25, 5.75 d 4, 4.2, 5.4, 6

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.