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andrew-mc [135]
2 years ago
5

The puppy needs to catch a train that is moving at 8 km/h. She is 100m away and running at 10 km/h. How far will the train have

traveled before the puppy is able to jump on?​
Mathematics
1 answer:
lana66690 [7]2 years ago
3 0

Answer: 400 m

Step-by-step explanation:

Given

Speed of train is v_t=8\ km/h

Speed of Puppy v_p=10\ km/h

Puppy is 100 m away from the train

Suppose train has moved x km before the puppy catches the train

Therefore puppy has to travel 100 m and  x km to catch the train

\Rightarrow t_p=t_t\\\text{Insert the values}\\\\\Rightarrow \dfrac{0.1+x}{10}=\dfrac{x}{8}\\\\\Rightarrow 8(0.1+x)=10x\\\Rightarrow 0.8+8x=10x\\\Rightarrow 0.8=2x\\\Rightarrow x=0.4\ km\ or\ 400\ m

Thus, train has traveled 400 m.

To know more visit

https://brainly.ph/question/12947958

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natulia [17]

The numbers 35, 2, 7, 33, 25, 70, 75, 40, 42, 12, 15, 7, 44, 20, 25, 3, 65, and 62 are all whole numbers.

  • All natural numbers and 0 are considered whole numbers. They are real numbers without fractions, decimals, or negative integers.
  • Rounding a number implies simplifying it while retaining its value close to what it was. The end output is less precise but more usable.
  • In a given base, a round number is an integer that ends with one or more "0s." So, 590 is more rounded than 592 but less rounded than 600. A round number is frequently understood in both technical and casual language to stand for a value or values close to the nominal value represented.

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6 0
1 year ago
Please help me- AND PLEASE EXPLAIN
GuDViN [60]

Answer:

A=35, B=55, and C=25

Step-by-step explanation:

Angle A and the angle next to it are linear pairs, so you can subtract 145 from 180.

if you already know Angle A, and that the other angle is 90 degress, you can add 90+35 and subtract it from 180 to get Angle B

Angle C is paired with the angle across from it (I forgot what the term is called) so it is 25 degrees.

7 0
3 years ago
Five-sixths of a number is 45.<br> Find the number.
tia_tia [17]

Answer: The number is 54!!!

Hope it helps!!!



Step-by-step explanation:

Let's call the number x.

So, 5/6 (of or multiplication) = 45

5x = 45* 6

x = 270/5

x = 54

4 0
3 years ago
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Answer:

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Suppose r(140°, P)(A) = B and (RPD←→∘RPC←→)(A) = B, what is m∠CPD?
NISA [10]

An angle bisector divides an angle into two equal halves.

The measure of angle \angle CPD is 70 degrees

The complete question is an illustrates the concept of angle bisector;

Where:

\angle RPD = 140^o, and line PC bisects \angle RPD

Because line PC bisects \angle RPD, then it means that the measure of RPD is twice the measure of CPD:

So, we have:

\angle RDP = 2 \times \angle CPD

Substitute \angle RPD = 140^o

140^o = 2 \times \angle CPD

Divide both sides by 2

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