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3 years ago

A train is travelling at a constant speed in ten minutes it travels 24 km work out how far it travels in 20 minutes

1 answer:

8 0

If it travels at a constant speed for twice the amount of time, the train should travel twice the distance, or 24 * 2 = 48 km.

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A two digit number has 6 more ones than tens. Twice the sum of the number and its reverse is 6 more than ten times the number. F

Alona [7]

The number with the given characteristics is 17

<h3>How to determine the numbers?</h3>

Let the tens be x and the units be y.

So, the number is 10x + y

The relationship between the digits is

y = x + 6

The relationship between the number and the reverse is

2(10x + y + 10y + x) = 6 + 10 * (10x + y)

Simplify the second equation

2(11x + 11y) = 6 + 100x + 10y

Open the brackets

22x + 22y = 6 + 100x + 10y

Substitute y = x + 6

22x + 22(x + 6) = 6 + 100x + 10(x + 6)

Expand

22x + 22x + 132 = 6 + 100x + 10x + 60

Collect like terms

22x + 22x - 100x - 10x = 6 + 60 - 132

Evaluate the like terms

-66x = -66

Divide by -66

x = 1

Substitute x = 1 in y = x + 6

y = 1 + 6

y = 7

Recall that the number is 10x + y

So, we have

Number = 10 * 1 + 7

Evaluate

Number = 17

Hence, the number is 17

Read more about numbers and digits at:

brainly.com/question/12992284

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7 0

2 years ago

Evaluate the expression when x = 3. Question 3) x + 29

Kryger [21]

Answer:

Step-by-step explanation:

Hello,

Replace x by its value, so here

for x = 3

x + 29 = 3 + 29 = 32

Thanks

3 0

3 years ago

Read 2 more answers

Composite shapes find the total volume of the 3D shapes round to the nearest hundredth

Nat2105 [25]

Answer:

904.32inc^3

Step-by-step explanation:

SEE IMAGE FOR ANSWER...

8 0

3 years ago

Is the number in the following statement an exact quantity or a measured quantity?You are told that a car gets 35 miles per gall

xeze [42]

The problem states that a certain car travels 35 miles per gallon of fuel. This statement has a certain level of uncertainty, because the fuel consumption varies with how the car is manuvered, therefore the correct answer is measured quantity.

7 0

2 years ago

If it's 2:30 PM what time is it gonna be in 45 minutes

natta225 [31]

3:15pm hope this helps bff

7 0

3 years ago