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Natali [406]
2 years ago
5

A train travels 300kn in 6 hours. How long will it take to complete a journey of 550km?

Mathematics
1 answer:
aliina [53]2 years ago
5 0

Answer:

11 hrs

Step-by-step explanation:

300 km --> 6 hrs

1 km --> 6/300 hrs

550 km --> ( 6/300 ) * 550 = 11 hrs

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Vedmedyk [2.9K]
By pythagoreans' theorem,

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= √(2² + 6²)
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Expand and simplify (x + 11)(x + 11)
labwork [276]

Answer:

Expand: x² + 11x + 11x + 121

Simplify: x² + 22x + 121

Step-by-step explanation:

To expand this, you can use the FOIL technique:

First terms

Outer terms

Inner terms

Last terms

(x+11)(x+11)

F - x*x = x²

O - x*11 = 11x

I - 11*x = 11x

L - 11*11 = 121

Put these numbers together (expanded) to get:

x² + 11x + 11x + 121

Put the common terms together (simplify) to get:

x² + 22x + 121

Note:

Not sure if you need this info, but (x + 11)(x + 11) is the same as (x + 11)².

The numbers need to be in the order I put them in because you are supposed to place them in order greatest to least degree.

Hope it helps!

6 0
3 years ago
At the Museum of Modern Art , 5 students share 4 subs.
Degger [83]

Answer:

1.25 of a sandwich

Step-by-step explanation:

5/4=1.25

I'm not sure if you have to round it or not, but I think this would be exact!

Hope this helps!

7 0
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Deirdre plotted a point D in Quadrant IV. After she reflected the point across an axis, the reflection was in Quadrant III. Give
Lostsunrise [7]
It depend on what d was. anything in Q3 can work for the reflection and both x and y are negative, you can say that for sure. for the actual point D, anything in Q4. in Q4 x is positive and y is negative. if d is (3,-3) then it's reflection is (-3,-3)
8 0
3 years ago
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