Can someone explain this to me?
7 × 9 > 50 + ....
The answer is 9. How does that equal 9 and how do you work it out?
The answer is 9. How does that equal 9 and how do you work it out?
31-35, F
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JoyfulSilence · 46-50, M
If the ... is a value like X, and X is a real number, then X has an infinite number of solutions, since it is an inequality.
7 * 9 > 50 + X
50 + X < 63
X < 13
7 * 9 > 50 + X
50 + X < 63
X < 13
summerlove · 31-35, F
@JoyfulSilence I did a quiz and it said 9, that's why I was confused. I thought it was 13. Thanks
JoyfulSilence · 46-50, M
I hope I was not allowing you to cheat! Or was this after the quiz?
summerlove · 31-35, F
@JoyfulSilence No you weren't. This was a practice quiz. The real one is next month.
JoyfulSilence · 46-50, M
Did my solution make sense. Did you see the steps? When in doubt, write out all the steps and do the fewest at a time to limit mistakes.
summerlove · 31-35, F
@JoyfulSilence Yes it does. I worked out the answer to be 13, because 7 times 9 is 63 and 50 plus 13 equals 63. The answer came out as 9, that's why I was confused, but I think it was a mistake.