3 years ago

Help me please will brainlist

Mathematics

1 answer:

Thepotemich [5.8K]3 years ago

8 0

Answer:B

Step-by-step explanation:

18 is greater than >16

18> 8-8(-1)

18>8+8

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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4 years ago

A motorboat left a harbor and traveled to an island at an average rate of 13 knots. The average speed on the return trip was 10

vlada-n [284]

Answer:

The distance between harbor & the island D = 72.12 km

Step-by-step explanation:

Let the total distance between harbor & island = D

Motor boat going to the island at speed $S_{1}$ = 13 knots = 24 $\frac{km}{hr}$

Return speed of the motorboat $S_{2}$ = 10 knots = 18.52 $\frac{km}{hr}$

The total time taken for both journey = 6.9 hours

$\frac{D}{S_{1} } + \frac{D}{S_{2} } = 6.9$

$\frac{D}{24} + \frac{D}{18.52} = 6.9$

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⇒ D = 72.12 km

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3 years ago