Mathematics, 19.12.2020 23:00 savskye1767
The average mass of 4 boys is 45 kg. When a fifth boy joins them the average mass changes to 40 kg. What is the mass of the fifth boy?
Answers: 1
Mathematics, 21.06.2019 21:30
Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?
Answers: 1
Mathematics, 21.06.2019 22:30
Maria found the least common multiple of 6 and 15. her work is shown below. multiples of 6: 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, . . multiples of 15: 15, 30, 45, 60, . . the least common multiple is 60. what is maria's error?
Answers: 1
Mathematics, 21.06.2019 23:20
Which equation can be solved to find x the measure of jk in the apex
Answers: 3
The average mass of 4 boys is 45 kg. When a fifth boy joins them the average mass changes to 40 kg....
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