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o-na [289]
4 years ago
12

two trains ,each 100 m long,moving in opposite directions ,cross each other in 8 seconds .if one is moving twice as fast as the

other train ,then the speed of the faster train is​
Mathematics
1 answer:
Feliz [49]4 years ago
8 0

Answer:

60 km/hr

Step-by-step explanation:

100+100

_______         =3x

      8

3x= 200/8

x=200/24 mps

=30mph

final speed is 60km/hr because its 2x's more =2*30=60

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Lady_Fox [76]

Answer:

3) SA= 64 V=28

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3 0
2 years ago
Jake needs to buy 120beverages for a party. What equation, in standard form, determines the number x of 8-packs of juice and the
kaheart [24]

8x+12y=120

8 packs -> x value

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total amt. of beverages is 120

3 0
3 years ago
I am thinking of
user100 [1]

Answer:

9 and 6

Step-by-step explanation:

Write down the system.

The two numbers are x and y.

We are therefore given:

x+y=15

x-y=3

I will solve this for elimination since it is already setup for it.

I will add the columns since both equations are in the same form.

2x+0y=18

2x      =18

Divide both sides by 2:

x        =18/2

Simplify:

x        =9

So if x+y=15 and x=9, then y=6.

The two numbers are 9 and 6.

Test:

9+6=15

9-6=3

3 0
3 years ago
(-(-17) what is the answer simplify the expression
WARRIOR [948]

Answer:

17

Step-by-step explanation:

Whenever you are multiplying 2 negative numbers together, the answer is always positive. In this case, you are multiplying -1 and -17 together, so your answer is going to be 17.

5 0
3 years ago
I will give brainliest if you get it right and 1st please answer this question?!
Dima020 [189]

Answer:

1  no

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3 yes

4 no

5 no

6 yes

explanation:

sooooooo just

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4 0
3 years ago
Read 2 more answers
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