3 years ago

Rain trees are planted every 15 metres apart along a road pavement, Bougainvillea

Mathematics

1 answer:

pickupchik [31]3 years ago

5 0

Answer:

120 m

Step-by-step explanation:

LCM of 1.6 and 15 will give us the distance

Put 1,6 and 15 in same format:

16/10= 2*2*2*2/10
150/10= 2*3*5*5/10

LCM= 2*2*2*2*3*5*5/10= 120 m

So the next point is 120 m apart

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A train 100 m long crosses a pole in 5 seconds.Find the speed of the train in kilometre per hour.

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Answer:

$\sf72 km/h$

Step-by-step explanation:

Distance covered by the train in crossing the pole = 100 m.

$\sf Time \: taken=5 \: seconds$

$\sf \: Speed \: of \: the \: train = \frac{Distance }{Time}$

$\sf = \frac{100}{5} \: m/s$

$\sf \: = 20 \: m/s$

$\sf \: = 20 \times \frac{18}{5} \: km/h$

$\sf = 72 \: km/h$

Hence, the speed of the train is 72 km/h

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3 years ago

Question 5 Unsaved Factor the 4 term polynomial using grouping: 20xy - 4y + 35x - 7 Question 5 options:

natulia [17]

Consider the expression $20xy - 4y + 35x - 7.$ Group first two terms and second two terms:

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Then

$(20xy - 4y) + (35x - 7)=4y(5x-1)+7(5x-1)=(5x-1)(4y+7).$

Answer: correct choice is A.

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4 years ago

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denis23 [38]

Answer:

Step-by-step explanation:

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