3 years ago

worth 11 points please help me

Mathematics

1 answer:

Vladimir [108]3 years ago

8 0

Answer:

ki yu mi kyu mi arigato nya ichi ni san nya arigato

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ritu can row downstream 20km in 2 hrs and upstream 4km in 2 hrs. find the speed of rowing in still water and the speed of the cu

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Answer:

Speed of boat in still water is 6km/h

Speed of current is 4km/h

Step-by-step explanation:

We know speed = distance / time

Let the speed of boat in still water be x

Let the speed of current be y

Hence the speed of boat, down stream = $x+y$

Distance downstream = 20km

Time taken = 2 hours

We have

$x+y=\frac{20}{2}$

$x+y=10$ ......(1)

Speed of boat upstream = $x-y$

Distance upstream = 4

Time taken = 2

We have

$x-y=\frac{4}{2}$

$x-y=2$ ...(2)

Adding (1) & (2)

$2x=12$

$x=6$

Substituting in (1) we get

$y=4$

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3 years ago

Write 15 and 40 ratio simplest form

alexandr402 [8]

Answer:

15:40

Step-by-step explanation:

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4 years ago

If angle j has a measure of 37°, what is the measure of angle m

OlgaM077 [116]

Answer:

measure of angle m is 37°

Step-by-step explanation:

cuz, angle m and angle j are vertical opposite angles hence their values will be equal .

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Step-by-step explanation:

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3 years ago

￼worth 11 points please help me

worth 11 points please help me