Ask question

Ask question

All categories

3 years ago

7

A train travels 360 km at a uniform speed. If the speed had been 5 km/h less, it would have taken 1 hour more for the same journ

ey. Find the speed of the train.
Please answer the question fast

1 answer:

sveticcg [70]3 years ago

6 0

Answer:

45 km/h

Step-by-step explanation:

Speed = x, distance= 360 km

------------

360/x= 360/(x-5)- 1
360/(x-5)-360/x= 1
360x-360(x-5)=x(x-5)
x^2-5x=360*5
x^2-5x- 1800=0
x=45 km/h

You might be interested in

FIRST ONE TO GIVE ME A CORRECT ANWSER GETS BRAINLIEST

klio [65]

Answer:

multiply by 5, t = 14.5

Step-by-step explanation:

t/5 = 2.9 (multiply each side by 5)

t = 14.5

3 0

3 years ago

I need help with number 3

olya-2409 [2.1K]

Answer: He would earn $14

Step-by-step explanation: Since Sam had 11 games but only 9 of them were working just take 11 - 9 which = 2 then take 7 x 2 to get $14

Hope this helps

3 0

3 years ago

Read 2 more answers

You swim 121 out of 1,000 meters. How can you write this as a decimal?

Amiraneli [1.4K]

The answer to this is .121

6 0

3 years ago

Read 2 more answers

How do percents show the relationship between quantities?

Alik [6]

Answer: Decide whether two quantities are in a proportional relationship, by testing for equivalent ratios in a table or graphing on a coordinate plane and observing whether the graph is a straight line through the origin . Use proportional relationships to solve multistep ratio and percent problems.

Step-by-step explanation:

6 0

3 years ago

5/8 didved by 1/4 plz help me with this

Vedmedyk [2.9K]

Answer:

The answer is 2.5 or 5/2 as a fraction.

Step-by-step explanation:

P.S Can I have brainliest?

5 0

3 years ago

Read 2 more answers