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ratelena [41]
1 year ago
11

5. Two trains travel in the same direction on

Mathematics
1 answer:
Sedbober [7]1 year ago
6 0

If the speed of train A is 90 kilometers per hour and the speed of train B is 100 kilometers per hour then after 5 hours they will be in the same place.

Given that the speed of train A is 90 kilometers per hour and the speed of train B is 100 kilometers per hour.

We are required to find the time after which both the trains will be in same place.

Speed is basically the distance travelled in a particular time.

Speed=Distance/Time.

Because the difference between both the train A and train B is 10 kilometers per hour so train B will cover 50 kilometers in 5 hours.

They will be at same place after 5 hours.

Hence if the speed of train A is 90 kilometers per hour and the speed of train B is 100 kilometers per hour then after 5 hours they will be in the same place.

Learn more about speed at brainly.com/question/4931057

#SPJ1

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Ill mark brainiest please help me!!!!!!!!
IgorC [24]

Answer:

yes , 33^2 + 56^2 = 65^2   and obtuse

Step-by-step explanation:

<h2><u>Question 3</u></h2>

make use of the Pythagoras theorem

which is :

c^2 = a^2 + b^2

where c is the hypotenuse.

now put the values in the equation

65^2 = 56^2 + 33 ^2

the answer is :

<u>yes , 33^2 + 56^2 = 65^2</u>

<u></u>

<h2><u>Question 4</u></h2>

<u />

note if :

c^2 = a^2 + b^2 ----------- right

c^2 < a^2 + b^2------------ acute

c^2 > a^2 + b^2------------- obtuse

hence :

16 + 30 > 38

therefore its : <u>obtuse </u>

4 0
3 years ago
What is the value of x in the equation <br> -5/8x=-160?
Helen [10]

Answer:

x= 1/256

Step-by-step explanation:

1. multiply both sides by 8x (answer: -5= 8x*-160)

2. divide both sides by -160 (answer: -5/-160 or 1/32 =8x)

3. divide both sides by 8 (answer: 1/256 = x

4. check your answer: -5/(8*1/256)= -160

5 0
3 years ago
What percent is 50% of 50% of x
kiruha [24]

Answer:

um the best i can say is 25% if thats the only info you give

Step-by-step explanation:

6 0
3 years ago
Prove that the value of the expression<br> (16^3–8^3)(4^3 +2^3) is divisible by 63.
Darya [45]

Answer:

Step-by-step explanation:

16^3 - 8^3

Take out 8^3 as a common factor.

16^3 = 2^3 * 8^3

8^3(2^3 - 1)  

8^3(8 - 1) = 8^3 * 7

(4^3 + 2^3)     Expand

64 + 8            Combine

72

72 = 9 * 8

Conclusion

(8*3 * 7 )(9*8)

7*9 = 63

So any number containing 63 will divide into the reduced form of

(16^3–8^3)(4^3 +2^3)

7 0
2 years ago
I need help!!!! Please
Veronika [31]
1x100,000 = 100,000
3x10,000 = 30,000
9x1,000 = 9,000
8x100 = 800
5x10 = 50
2x1 = 2
Add these all together to get your answer.  Standard form is the form we usual write numbers in.  
4 0
3 years ago
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