EVESUNER1303
25.02.2021 •
Mathematics
Halp me plez I dont wanna fail ( MUST BE A EXPRESSION)
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Ответ:
2x+15=33
Step-by-step explanation:
Let n be the number of days he has been doing sit ups, not counting the first day. Since he does 2 more sit-ups for each day, then the number of additional sit-ups is 2n.
Since he started doing 15 sit-ups on the first day, the total number of sit-ups
after x days would be 2n+15.
Since he did a total of 33 sit ups today, then 2n+15=33
Ответ:
3Y = 3x - 15
Y = x - 5
2. Solve the absolute value equation.
|2x-1|=3
2x-1 = 3 : 2x - 1 = -3
2x = 4 : 2x = -2
x = 2 : x = -1