cho nửa đường tròn tâm O đường kính Ab với các tiếp tuyến Ax, By nằm cùng phía với AB. Qua điểm M thuộc nửa đường tròn ( M khác A vàB), kẻ tiếp tuyến với nửa đường tòn cắt Ax, By theo thứ tự ở C và D sao cho MC=4cm, MD=9cm. Tính diện tích tam giác AMB

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?

The dolphins at the webster are fed 1/2 of a bucket of fish each day the sea otters are fed 1/2 as much fish as the dolphins how many buckets of fish are the sea fed each day? simplify you answer and write it as a proper fraction or as a whole or mixed number

Eric has challenged himself to walk 24,000 steps in 4 days. if eric walks the same number of steps each day, which function represents the number of steps eric still needs to walk to reach his goal with respect to the number of days since he started his challenge? a. y = 8,000x − 24,000 b. y = -8,000x + 24,000 c. y = 6,000x − 24,000 d. y = -6,000x + 24,000