<span>6 km × 1 hour/(b-4 km) = 12 km × (1 hour/(b+4 km)
6/(b-4) hours = 12/(b+4) hours
6(b+4) = 12(b-4)
6b + 24 = 12b - 48
72 = 6b
b = 12
The boat's speed in still water is 12 km/hour.</span>
Answer:
102
Step-by-step explanation:
89 + a
Let a=13
89+13
102
Answer:
19.2
Step-by-step explanation:
i believe it should be that 99% sure
Answer: The median score will remain the same at 91.
Step-by-step explanation: The median is the middle number in a sorted, ascending or descending, list of numbers and can be more descriptive of that data set than the average. Write all of the numbers and cross out a even amount of numbers on both sides. Image 1 shows the problem with original numbers. Image 2 shows problem with new numbers
Answer:
5.13 feet
Step-by-step explanation:
So, we have the full dimensions of flag #1, and we have the partial dimensions of flag #2, which should follow the same ratio as flag #1, since not indicated otherwise.
When you need to compare dimensions like that, the easiest way to proceed is to do a cross-multiplication. Let's say x is the length of flag #2 we're looking for. It's ratio over the width of flag #2 will be the same as the ratio of the length of flag #1 over its width, so:

If we isolate x, we have x = (2.7 * 1.9) / 1 = 5.13 feet
Which makes sense since we know the result should be a bit less than 2.7 times 2.