Ask question

Ask question

All categories

PilotLPTM [1.2K]

3 years ago

7

Two trains, Train A and Train B, weigh a total of 407 tons. Train A is heavier than Train B. The difference of their weight is 2

49 tons. What is the weight of each train

1 answer:

alexira [117]3 years ago

5 0

Answer:

A = 328 tons, B = 79 tons.

Step-by-step explanation:

A + B = 407

A - B = 249

Cancel b out of the equation, then add the rest.

2A = 656, A=328 tons

A + B = 407, B = 407-328

B = 79 tons

You might be interested in

Ten times the sum of half a number and 6 is 8

Delvig [45]

Im sorry but I don't really get the question, can you please explain it a little better?

4 0

2 years ago

Can you that special son plz help me out mad let it be correct!!!

yarga [219]

Answer:Yes

Hope this helps!

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

How to solve this task???

Radda [10]

So (m+n)/2= 7

To find m+n, multiply both sides by 2
m+n=14

Final answer: C

3 0

3 years ago

Read 2 more answers

Find the number of real number solutions for the equation. x^2+5x+7=0

koban [17]

Given a quadratic equation $ax^2+bx+c=0$ , we define the discriminant as

$\Delta = b^2-4ac$

The number of real solutions of the equation depend on the sign of $\Delta$ :

If $\Delta>0$ the equation has two solutions
If $\Delta=0$ the equation has one double solution
If $\Delta$ the equation has no real solutions

In this case, we have

$\Delta = 25-28=-3$

And so this equation has no real solutions.

7 0

2 years ago

What are the zeros of the function below?

hoa [83]

Answer:

C

$\:\:\:\:$

4 0

2 years ago

Read 2 more answers