How do i figure out these questions?
could you teach me and give me examples? examples with the answer and why it is would also be appreciated!
1) how tall are sally and anna if sally is 0.1 m taller than anna and their combined height is 3.16 metres?
sally _ anna _
2) find these simple quantities
a. 1/5 of $50
b. 10% of $40
you!

Iq scores for adults age 20 to 34 years are normally distributed according to n(120, 20). in what range does the middle 68% of people in this group score on the test?

Amovie streaming service charges it’s customers $15 a month. martina has $98 saved up. will she have any money left over if she pays for the maximum amount of months she can afford? explain.

Ben and cam are scuba diving. ben is 15.815.8 meters below the surface of the water. cam is 4.24.2 meters above ben. what is cam's position relative to the surface of the water? choose 1 choose 1 (choice a) a 11.611.6 meters above the surface of the water (choice b) b 11.611.6 meters below the surface of the water (choice c) c 2020 meters above the surface of the water (choice d) d 20 meters below the surface of the water