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Zina [86]
3 years ago
13

In this 3x3 square, you can use only numbers from 1-9, to make all the rows and columns equal to 15. Good luck to the person sol

ving this and just know that I and lots more people thank you for solving this!

Mathematics
1 answer:
bulgar [2K]3 years ago
8 0

Answer:

Hello,

Step-by-step explanation:

The well-known magic square. (first apparition in China).

Here it the methode du Marquis de Liouville: (odd square:3,5,7,9,11,13,...)

We are going to put successively the number from 1 to n² (here n=3)

We imagine that the square is put on a sphere;

We begin in the middle of the last line where we put 1

ICI:

We move in direction SE of one case and put le next number

until we reach of multiple of n

After have reached a multiple of n, we move verticaly of one case

and we go to ICI until we reach n²

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Someone please help I will give biranlyest to who ever is right.​
Hitman42 [59]

Answer:

A. cd4

Step-by-step explanation:

3 0
2 years ago
Z = { x:x is an integer, x ≥ - 3 and x ≤ + 3}​
tankabanditka [31]

Answer:

If this is asking for the set:

Z = {-3, -2, -1, 0, 1, 2, 3}

Step-by-step explanation:

Z is the set of all integers and it appears that you are being asked for the values in the set Z that are within the range:  -3 ≤x ≤ 3

5 0
2 years ago
I spent 3/4 of my money and then I spent 1/5 of what was left.
Monica [59]

Answers:

a) 4/5

b) 1/5

================================================

Let's say you start off with $100. If you spend 3/4 of that, then you spend 75 dollars (because 75/100 = 3/4). Think of it like 75 cents = 3 quarters. If you spend 75 dollars out of 100 total, then you have 100-75 = 25 dollars left after the first round of spending.

If you spend 1/5th of what is left, then you spend $5 on the second round leaving 25-5 = 20 dollars left at the end of the day.

Total up what you spend for both rounds: 75+5 = 80, which divides over the original amount 100 to get 80/100 = 8/10 = 4/5

If you had 20 dollars at he end of the day, out of 100 initially, then 20/100 = 2/10 = 1/5 is the fraction of what you have left.

note how 4/5 and 1/5 add to 5/5 = 1.00 = 100%. This is because the amount you spend and the amount you have left over must add to 100% of all the money you started with

6 0
3 years ago
A metal bar weighs 24 ounces. 15% of the bar is gold. How many ounces of gold are in the bar? *​
emmainna [20.7K]

Answer:

7.6 ounces of silver

Step-by-step explanation:

Hope this helps :)

3 0
3 years ago
What is 2x + 7y = –10?
lubasha [3.4K]

Answer:

-1 1/9

Step-by-step explanation:

2x + 7x  = -10    (equation)

9x = -10   (combine like terms)

x = -10/9   (move the 9 over)

x = -1 1/9 (simplify)

6 0
3 years ago
Read 2 more answers
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