ruth got to the library at 10:30am she stayed at the library for 50 minutes. then she walked home. Ruth took 1 1/4 hours to walk home. At what time did ruth get home?

Suppose there are 10 five and six-year-old attending a birthday party. when a 30 year old mother walks into the room with an infant in her arms, what happens to the mean age in the room? what happens to the standard deviation of ages in the room? a. the mean and standard deviation of both change. b. the meaning will change, but the standard deviation will stay approximately the same. c. i mean will stay approximately the same, but the standard deviation will change. d. the mean and standard deviation will both stay approximately the same.

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section

The measures of the legs of a right triangle are 15m and 20m . what is the length of the hypotenuse