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RoseWind [281]
3 years ago
10

If a = –3.7, what is the value of –a? A. 3.7 B. 3 C. –3.7 D. –3

Mathematics
1 answer:
Mrac [35]3 years ago
3 0
Multiplying the negative number by a negative makes it positive, so -3.7*-1=3.7. A is the best answer.
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USE DISTANECE= RATE * TIME
torisob [31]
A]
D=R×t
d=5.8r
d2=5.1(r+7)
0.7r=35.7
r=51 mi/hr
thus the average speed on the outbound trip would be:
51+7=58 mi/hr

b]
let speed of fishing boat=x km/h
speed of cruise ship=(x+12.5) km/h
distance traveled by fishing boat=11.5×x=11.5x km
distance traveled by cruise ship=(x+12.5)×11=(11x+137.5) km
Total distance covered by the ships:
11.5x+11x+137.5=322
22.5x=322-137.5
22.5x=184.5
thus
x=184.5/22.5
x=8.2 km/h
The speed of fishing boat is 8.2 km/hr





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babunello [35]

Answer:

Step-by-step explanation:

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5 0
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