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3 years ago

A train is 1000 metres long. It is travelling at a constant speed, and approaches a

Mathematics

1 answer:

jolli1 [7]3 years ago

4 0

Answer:

240kmh

Step-by-step explanation:

The distance that the train traveled in 30s is the difference of the total length of the tunnel and the train (2000m). This means it travels 2000m/30s. This ratio is the same as 240000/3600s or 240km/1hr.

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BRAINEST IF YOU GET THSI RIGHT

Scorpion4ik [409]

<h3>Solution :</h3>

$\sf \dfrac{6x+4}{3} = \dfrac{5x-5}{8}$

By cross multiply, we get

$\sf : \implies (6x+4) \times 8 = (5x-5) \times 3$

$\sf : \implies 48x+32 = 15x-15$

$\sf : \implies 48x+32 - 15x + 15= 0$

$\sf : \implies 33x + 47 = 0$

$\sf : \implies 33x = -47$

$\sf : \implies x = \dfrac{- 47}{33}$

Therefore, answer is $\sf x = \dfrac{- 47}{33}$

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3 years ago

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Alenkasestr [34]

Y=1/5x+3
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3 years ago

The Buses leave to the Hall every 16 minutes and the central buses leave every 10 minutes.Both leave at 4 p.m.Find the next time

ikadub [295]

Answer:

Both leave at 4 pm . The next time they will leave at 5:20 pm

Step-by-step explanation:

Taking LCM of 16 and 10

16= 2*2*2*2

10= 2*5

LCM= 2*2*2*2*5= 80

1 hour = 60 mins

80/60= 1 hour 20 minutes

Both leave at 4 pm . The next time they will leave at 5:20 pm

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3 years ago

Find the value for the given variables. Give the variables in simplest radical form.

Svetach [21]

$\huge\boxed{ \boxed{\mathrm{ \underline{Answer}࿐ }}}$

The given triangle is a right angled triangle,

so let's apply trigonometry here :

$\sin(30) = \dfrac{7}{y}$

$\dfrac{1}{2} = \dfrac{7}{y}$

$y = 7 \times 2$

$y = 14 \: \: units$

Now,

$\cos(30) = \dfrac{x}{y}$

$\dfrac{ \sqrt{3} }{2} = \dfrac{x}{14}$

$x = \dfrac{14 \sqrt{3} }{2}$

$x = 7 \sqrt{3}$

$x = 12.12 \: \: units$

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3 years ago

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Jonas bought 3 books. Each book was the same price. He also used a coupon that takes $20 off the total cost. What expression can

Mademuasel [1]

let x = the price of a book

so you would have

total = 3x-20

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3 years ago