Umm, I don`t want to embarass myself but I study in a prestigious European business university and the lecturers teach us that for a line to have a negative slope when the y decreases the x must increase. The lane that you drew, doesn`t it have a positive slope as both x and y increase ?

Coordinate geometry, last question

In the xy plane , the line k passes through a point T with coordinates (a;b) where axb does not equal zero. Is b positive ? 1)The slope of line k is negative 2) a< b I answered 5 , but the correct question is 3. Here`s what I did: From statement 1 we know that the slope is negative but thats not eno...

Hmm, problem with understanding the possible values

http://prikachi.com/images.php?images/737/7528737R.jpg Where was I wrong ? From the given information in 1) and 2)I thought both cases are possible q = 1150 p = 1101 => 1,06q > p but its also possible that q = 1150 p =2000 => 1,06q < p and therefore answer 5 should be the right one Given that q - p ...

It`s a program called 800 score.

http://prikachi.com/images.php?images/985/7520985a.jpg

I think you made a small mistake here mate as 3x37 > 100. 3 can be paired with 8 numbers - 5, 7 , 11 , 13, 17, 23, 29 31. inclusive. The next prime 37 x 3 will be more over 100. 5 can be paired with 4 numbers - 7 , 11 , 13 and 17 . 7 with 2 numbers - 11 and 13. This is a total of 14 numbers. The cor...

Number properties , again

How many positive integers less than 100 have exactly 4 odd factors but no even factors ?

1) 13

2) 14

3) 15

4) 16

5) 17

No idea how to name this lol

In a village of 100 households , 75 have at least one DVD, 80 one cell and 55 one Mp3. If x and y are respectively the greatest and lowest possible number of households that have all three devices , what is x - y ? Now , I usually got that type wrong but I spent a lot of time perfecting it. I made a...