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jro20
07.11.2020 •
Mathematics
-413.4=-15.9n please help
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Ответ:
Step-by-step explanation:
Solve for
:
-Switch sides:
-Divide both sides by
and expand by multiplying both numerator and denominator by
:
-Divide
and
:
Therefore, the value of
is
.
Ответ:
In the first 5 months, b = 4000 + 1000t, for 0 ≤ t≤ 5
Thereafter
b = 4000 + 1000t (0≤t≤5)- 1000t (t>5) = -|1000t-5000|+9000
In addition,
After 3 moths;
b = 4000+1000*3 = 4000+3000 = $7000
After 7 moths;
b = 4000+1000*5-1000*2 = 4000+5000-2000 = $7000
Therefore, statements A, C and D are true for this situation.