An earthquake strikes in an isolated area is without food or water. Three crews arrive. One can dispense needed supplies and 35 hours, a second and 70 hours, and a third in 10 hours. How long will it take all three crews working together to dispense food and water?
1 answer:
Answer:
115 hours.
Step-by-step explanation:
35+70=105
105+10=115 hours
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f(x) = -3x + 6
Answer:
b)Add the equations to eliminate x.
Step-by-step explanation:
y= x+20
y= - x+2
Result of the addition: (-x cancels x)
2y = 22
y =11
11=x +20 -9 = x
11=9+2
11 = -9 +20
Answer:
5 + 7
Step-by-step explanation:
3 + 2 = 5, 4 + 3 = 7
W=17 im too good at math to be wrong about this
-4.2 degrees. What you would do is from 8-12 (midnight) is 4 hours. So it dropped -16.8 degrees in those 4 hours so -16.8 / 4 is -4.2 degrees. So it dropped -4.2 degrees every hour but it was also -4.2 degrees at 9:00 p.m.
