According to medical data, the ages at which patients have their first hip replacement surgery follows a normal distribution. The average age for a first hip replacement is 55 years
of age, with a standard deviation of 8 years. Therefore, doctors can expect 99.7% of their hip
replacement surgery patients to be between what ages?
O 47-63
O 39 - 71
O 31 - 79
O 45-65
ws

8121 because

130,000 divided by 16 is 8121

77

step-by-step explanation:

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.