All categories

1 year ago

Hi I'm the mom I would like to see if you can help me with this problem

Mathematics

1 answer:

Tanya [424]1 year ago

5 0

From the statement of the problem, we know that:

• a train starts at City A and travels 2,158 km to City B,

• then it travels 3,793 km from City B to City C.

The distance between City A and City C is equal to the sum of the distance from City A to City B, and the distance from City B to City C. So the distance between City A and City C is 2,158 km + 3,793 km = 5951 km.

Looking at the answer of Clay:

We see that he added 7 km to each of the distances, that's the reason why he found a different a wrong result.

You might be interested in

How do I write 684297 in word form?

Daniel [21]

Answer:

Six hundred eighty-four thousand two hundred ninety-seventh

6 0

3 years ago

Can someone solve these 2 problems ? 9 and 8

siniylev [52]

I just answered that on someone elses. the last one is 4x+y+5z=3

answer the other one on the online algebra calcultor

5 0

3 years ago

Read 2 more answers

If BC = 2x, CD = 7x, and BD = 9, what is CD?

Paha777 [63]

Answer: 18

Step-by-step explanation:

2(9)=18

8 0

3 years ago

In a game, a player earns 100 points for each question answered correctly and earns -30 points for each question answered incorr

REY [17]

The general expression is 130 x - 600 and total points scored by the player is 1220

A) Let the number of correctly answered questions be x.

∴ Number of incorrectly answered questions will be 20 - x.

+ 100 points is awarded for each question answered correctly while -30 points is awarded for each question answered incorrectly.

Thus, the general equation becomes

= 100x - (20 - x)(-30)

= 100x +30x - 600

= 130x - 600

Thus the general expression becomes 130 x - 600

B) The player answers 14 questions correctly, thus x = 14

Substituting the value of x =14 in the general equation we get,

= 130(14) - 600

= 1820 - 600

= 1220.

Thus the total points scored by the player will be 1220

Learn more about Linear Equations here :

brainly.com/question/14989092

#SPJ1

6 0

1 year ago

A boat is being pulled into a dock with a rope attached to the boat at water level. When the boat is 12 feet from the dock, the

Natali5045456 [20]

Given :

A boat is being pulled into a dock with a rope attached to the boat at water level. When the boat is 12 feet from the dock, the length of the rope form the boat to the dock is 3 feet longer than twice the height of the dock above the water.

To Find :

The height of the dock.

Solution :

This will make a right angle triangle as given in link below .

Now , applying Pythagoras theorem :

$(2h+3)^2=h^2+12^2\\\\4h^2+9h+9=h^2+144\\\\h^2+4h-45=0\\\\(h-5)(h+9)=0$

Now , h = 5 or h = -9 .

Now , height cannot be negative .

So , height of the dock is 5 ft .

Hence , this is the required solution .

8 0

3 years ago