Answer:
20 mens are needed to contruct a building in 32 days.
Answer:
what is the situation?
Step-by-step explanation:
The scenario is wrong. according to the three other tools, the hot air balloon would be increasing in altitude, not descending.
Answer:
2 ± i
Step-by-step explanation:
by 5, I assume you mean +5
x² - 4x + 5 = 0
x = (-b±(√(b²-4ac)) / 2a
x = (4 ± (√(16 - 20)) / 2
x = (4 ± (√(-4)) / 2
√-4 = √4√-1 which is 2i
x = (4 ± 2i) / 2
x = 2 ± i
