Let the smaller number be x and the larger one be y
x + y = 77
y = x + 5
Substituting into the first equation
x + (x + 5) = 77
2x + 5 = 77
Subtracting 5 to both sides
2x +5 -5 = 77-5
2x = 72
Divide both sides by 2
2x/2 = 72/2
x = 36
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Answer:
At least 7 more students need to sign up for the field trip to be scheduled
Explanation:
Assume that the least number of students remaining to register for the trip to be scheduled is x.
total number of students = students who already registered + x
We are given that, the least number of students required for this trip is 30. This means that:
total number of students ≥ 30
Now, we know that 23 students already registered.
The inequality now is:
x + 23 ≥ 30
x ≥ 30 - 23
x ≥ 7
This means that at least 7 more students must register for the trip to be scheduled.
Hope this helps :)
Answer:
Step-by-step explanation:
hello :
the system is : y= 3x+4....(*)
y+6=3x....(**)
by (**) : y = 3x - 6
so : y= 3x+4
y= 3x - 6
means : 3x+4 = 3x - 6
4= -6.......(false)
conclusion : no reals solutions
that's very interesting!! is there more to your question that we can answer?