subject
Mathematics, 26.01.2020 02:31 jalaholmes2027

John is twice as old as mary. the sum of their ages is 52. how old is mary? if j = john's age and m = mary's age, which system of equations could be used to solve the problem?

ansver
Answers: 1

Another question on Mathematics

question
Mathematics, 21.06.2019 16:00
Does the problem involve permutations or? combinations? do not solve. the matching section of an exam has 4 questions and 7 possible answers. in how many different ways can a student answer the 4 ? questions, if none of the answer choices can be? repeated?
Answers: 1
question
Mathematics, 21.06.2019 16:50
The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?
Answers: 1
question
Mathematics, 21.06.2019 21:20
Find the missing variable for a parallelogram: a = latex: 28in^2 28 i n 2 h = b = 6.3 in (1in=2.54cm)
Answers: 3
question
Mathematics, 21.06.2019 22:30
Ascientist places 24 cells in a petri dish. she knows the cells grow at an exponential rate, doubling in number every hour. how long will it take (in hours) for there to be 1100 cells in the dish? time to 1100 cells: 5.51832530 hours how long will it take to reach 110 cells? time to 110 cells : 2.1963972 hours what is the average rate of change in the number of cells between 9 hours and 11 hours? average rate of change: cells per hour what is the instantaneous rate of change after 7 hours? instantaneous rate of change: cells per hour note: you can earn partial credit on this problem.
Answers: 1
You know the right answer?
John is twice as old as mary. the sum of their ages is 52. how old is mary? if j = john's age and m...
Questions
Questions on the website: 13722359