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ICE Princess25 [194]
2 years ago
8

in January the average low temperature in Montreal,Quebec,Canada, is 5.2f. the average low temperature in Cape Town South Africa

is 60.3 f which city is warmer January.
Mathematics
2 answers:
sergiy2304 [10]2 years ago
8 0
Canada is colder in January because it is an average of -15 C and the average temp in South Africa is around 15 C
Andrews [41]2 years ago
7 0

Answer:

Cape town is warmer than Montreal.

Step-by-step explanation:

In January the average low temperature in Montreal,Quebec,Canada, is 5.2f. Converting this into more common unit Celsius.

(5.2°F − 32) × 5/9 =  -14.89 C

The average low temperature in Cape Town South Africa is 60.3 f. Again converting this to Celsius.

(60.3°F − 32) × 5/9 = 15.72°C

As we can see that temperature in Celsius below zero is colder or freezing. So, the temperature in Montreal is colder.

Therefore, Cape town is warmer than Montreal.

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If a boatman rows his boat 35km up stream and 55km downstream in 12 hours and he can row 30km upstream and 44 km downstream in 1
MariettaO [177]

To answer this item, we let x be the speed of the boat in still water. The speed of the current, we represent as y.

When the boat travels upstream or against the current, the speed is equal to x – y and x + y if it travels downstream or along with the current.

The time it takes for the an object to travel a certain distance is calculated by dividing the distance by the speed.

First Travel:    35 / (x – y)   + 55 / (x + y) = 12

Second travel: 30 / (x – y)   + 44 / (x + y) = 10

Let us multiply the two equations with the (x-y)(x+y)

This will give us,

              35(x + y) + 55(x – y) = 12(x-y)(x+y)

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Using dummy variables:

Let a = x + y and b be x – y

                35a + 55b = 12ab

                30a + 44b = 10ab

From the first equation,

                     b = 35a/(12a – 55)

Substituting to the second equation,

                30a + 44(35a/(12a – 55)) = 10a(35a/(12a-55))

The value of a is 11.

              b = 35(11)/(12(11) – 55))

              b = 5

Putting back the equations,

        x + y = 11

       x – y = 5

Adding up the equations give us,

  2x = 16

   <em> x = 8 km/hr</em>

The value of x, the speed of the boat in still water, is 8 km/hr. 

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2 years ago
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Answer:

See below

Step-by-step explanation:

BC bisects <DBE and if AC is a straight line then you have that:

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Because BC bisects <DBE =>   < DBC = <CBE

So <ABD and <ABE must be the same to both sum 180 when added < DBC

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Answer:

Step-by-step explanation: Uhh I have no idea how I got this right because I guessed but

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