Answer:
The starting number is 78.
Explanation:
(x / 3) / 2 = 13
divide a number by 3 (x / 3)
divide in half (x / 3) / 2
You get 13 (x / 3) / 2 = 13
Reverse the problem.
13 * 2 = 26
26 * 3 = 78
x = 78
Plug in the number.
(78 / 3) / 2 = 13
78 / 3 = 26
26 / 2 = 13
Answer:
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Below is the proof that the sum of two odd numbers is always even.
<h3>
How to prove that the sum of two odd numbers is even?</h3>
First, remember that an even number is written as:
x = 2*n
Where n is an integer number.
While an odd number will be written as:
y = 2*n + 1
Now, let's say that we have two odd numbers:
A = 2k + 1
B = 2n + 1
If we add these we get:
A + B = (2k + 1) + (2n + 1) = 2k + 2n + 2 = 2*(k + n + 1)
And k + n + 1 is an integer number, then we can write:
k + n + 1 = N
So we get:
A + B = 2N
Then the sum of A and B is an even number.
Thus, we proved that for the sum of any two odd numbers, the outcome will always be even.
If you want to learn more about odd numbers, you can read:
brainly.com/question/543861
On average The number of trains after a long time is = 2 trains
<u>Given data :</u>
Number of trains = 3
<u>Let's assume :</u>
speed of Train 1 = V₁
speed of Train 2 = V₂
speed of Train 3 = V₃
<h3> </h3><h3> Determine the number of trains after a long time has elapsed </h3>
- Before linkage = 3 trains
- When ( Train 1 and Train 2 links ) = 2 trains
- When ( Train 1 , Train 2 and Train 3 links ) = 1 train
- When ( Train 2 and Train 3 links ) = 2 trains
Therefore the average number of trains after a long time will be
( 3 + 2 + 1 + 2 ) / 4
= 8 / 4
= 2 trains
Hence we can conclude that On average The number of trains after a long time is = 2 trains
Learn more about Average calculations : brainly.com/question/20118982
Answer:
The function of histogram to help summarise and provide visual interpretation of continuous data.
The three types of information it convert are;
1. Shape
2. Variation.
3. Median.
Explanation:
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