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2 years ago

15

A train is scheduled to make a journey of 300km at an average speed of 120km/hr it leaves 6 minutes late and it’s average speed

is increased so that it arrives on time find the new average speed

1 answer:

Alekssandra [29.7K]2 years ago

6 0

Answer:

hsiwwbwswoksn

Step-by-step explanation:

jeiwosnn1owjsnw

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True or false? An airplane is flying west at 200 km/h. Two hours later, it is flying west at 300 km/h. Its average acceleration

alex41 [277]

I'm pretty sure its true, not 100%.

4 0

2 years ago

Use the quadratic formula to find the solutions to the equation x^2-3x+1=0

Gnom [1K]

Answer:

$x_{1}=\frac{+3+\sqrt{5} }{2}\\\\x_{2}=\frac{+3-\sqrt{5} }{2}$

Step-by-step explanation:

Using:

$x=\frac{-b+-\sqrt{b^{2}-4*a*c} }{2*a}$

we will have two solutions.

x^2-3x+1=0

So, a=1 b=-3 c=1

$x_{1}=\frac{+3+\sqrt{-3^{2}-4*1*1} }{2*1}\\\\x_{2}=\frac{+3-\sqrt{-3^{2}-4*1*1} }{2*1}$

We have two solutions:

$x_{1}=\frac{+3+\sqrt{5} }{2}\\\\x_{2}=\frac{+3-\sqrt{5} }{2}$

4 0

2 years ago

A submarine was located 200 feet below sea level. If it ascends 55 feet and then drops 87 feet, then which integer represents th

kirill [66]

Answer:

-232

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

A football team loses 15 yards on one play and gains 9 yards on another play. How many total yards did the team lose?

Licemer1 [7]

Answer:

-6

Step-by-step explanation:

imagine you're on a line graph you start at zero and then go backward 15 spaces and move forward 9 spaces where does that leave you

4 0

3 years ago

a and b can do a piece of work in 12 days, b and c in 15 days and c and a in 20 days. how much time will a alone take to finish

nydimaria [60]

A and b can do a piece of work in 12 days. If a alone have to finish the job among b and c so

A and b=12
A (24 days alone without b)

So if b and c 15 days and c 20 days. If a have to do all I would add 24 and 15 and 20 which would be 59 days

7 0

2 years ago