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1

Friday, September 4th 2020, 7:22am

Back to School Week - Monday: Maths!



And here is the example for the Monday - Maths!

How can you make the following equation true by drawing only one straight line: 5+5+5=550 Can you figure it out?

Event description and rules


Thread will close Tuesday, 8th of September, 17h59 server time.

This post has been edited 2 times, last edit by "Sequana" (Sep 21st 2020, 5:30pm)


2

Monday, September 7th 2020, 6:21pm

add a line to the first '+' and it becomes a '4' so... 545 + 5 = 550
404 not found

3

Monday, September 7th 2020, 6:30pm

What is the angle between the two curves

y = e^x and y = e^(-x) at their point of intersection?
404 not found

4

Monday, September 7th 2020, 6:35pm

90°
What is the angle between the two curves

y = e^x and y = e^(-x) at their point of intersection?

5

Monday, September 7th 2020, 7:00pm

Find X+Y . If
4 -> 17 -> 8
5 -> 26 -> 8
8 -> Y -> X

6

Monday, September 7th 2020, 7:01pm

Find X+Y . If
4 -> 17 -> 8
5 -> 26 -> 8
8 -> Y -> X
8--> 53 -> 8

7

Monday, September 7th 2020, 7:30pm

Find X+Y . If
4 -> 17 -> 8
5 -> 26 -> 8
8 -> Y -> X
8--> 53 -> 8

4 -> (4^2) +1 = 16+1 = 17 -> 1+7=8
5 -> (5^2) +1 = 25+1 = 26 -> 2+6=8
8 -> (8^2) +1 = 64+1 = 65 -> 6+5=11
Answer: 65 +11= 76

8

Monday, September 7th 2020, 7:53pm


i think 4 = 17 5 = 17 +9 6=17+9+9 8= 17 +9+9+9+9=53 it's for y Depending of the point of view the answer could be right or not, but I can't guess the way that you think
Find X+Y . If
4 -> 17 -> 8
5 -> 26 -> 8
8 -> Y -> X
8--> 53 -> 8

4 -> (4^2) +1 = 16+1 = 17 -> 1+7=8
5 -> (5^2) +1 = 25+1 = 26 -> 2+6=8
8 -> (8^2) +1 = 64+1 = 65 -> 6+5=11
Answer: 65 +11= 76

9

Monday, September 7th 2020, 7:54pm

Find X+Y . If
4 -> 17 -> 8
5 -> 26 -> 8
8 -> Y -> X
8--> 53 -> 8

4 -> (4^2) +1 = 16+1 = 17 -> 1+7=8
5 -> (5^2) +1 = 25+1 = 26 -> 2+6=8
8 -> (8^2) +1 = 64+1 = 65 -> 6+5=11
Answer: 65 +11= 76
i think 4 = 17 5 = 17 +9 6=17+9+9 8= 17 +9+9+9+9=53 it's for y Depending of the point of view the answer could be right or not, but I can't guess the way that you think

10

Monday, September 7th 2020, 8:10pm

Find X+Y . If
4 100 0
5 145 20
6 200 0
7 265 60
8 x y

11

Monday, September 7th 2020, 8:22pm

Find X+Y . If
4 100 0
5 145 20
6 200 0
7 265 60
8 x y
X= 265+75 =340
Y= 3*4*0 =0
X+Y=340+0=340
Solution= 340

12

Monday, September 7th 2020, 8:25pm

some trouble to solve:? :mol:

13

Monday, September 7th 2020, 9:57pm

12 x 12 = 9
23 x 23 = 16
34 x 34 = ?

14

Monday, September 7th 2020, 10:31pm

2x+3y=19

y+3x=11

15

Monday, September 7th 2020, 10:38pm

34 x 34 = 25

16

Monday, September 7th 2020, 10:39pm

34 x 34 = 25
no

17

Monday, September 7th 2020, 10:44pm

12 x 12 = 9
23 x 23 = 16
34 x 34 = ?


34*34=1156,
1+1+5+6= 13

[list][*][/list]

18

Monday, September 7th 2020, 10:45pm

34 x 34 = 25
no
13, then.

19

Monday, September 7th 2020, 10:45pm

12 x 12 = 9
23 x 23 = 16
34 x 34 = ?


34*34=1156,
1+1+5+6= 13

[list][/list]
True :)

20

Monday, September 7th 2020, 10:57pm

12 x 12 = 9
23 x 23 = 16
34 x 34 = ?
Multiply 12*12=144 Sum of the digits of its product 1+4+4=9 Therefore 12*12=9 In the same way Multiply 23*23=529 Sum of the digits of its product 5+2+9=16 asnd now Multiply 34*34=1156 Sum of the digits of its product 1+1+5+6=13 Therefore 34*34=13 :sleep: was a hard one :king: