Asked by NAME
I had a lot of trouble with these two questions can someone help?
george spent 25% of the moeny he had on lunch and 60% of the rmaining money on dinner. if he then had 9 dollars left, how much money did he spend on lunch and dinner?
For what set of values of x is the expression Absolute value sign 3x+4 absolute value sign < 0 true?
a) -4/3 < 0<x
b)x<-4/3
c) no real numbers
d)all real numbers
george spent 25% of the moeny he had on lunch and 60% of the rmaining money on dinner. if he then had 9 dollars left, how much money did he spend on lunch and dinner?
For what set of values of x is the expression Absolute value sign 3x+4 absolute value sign < 0 true?
a) -4/3 < 0<x
b)x<-4/3
c) no real numbers
d)all real numbers
Answers
Answered by
oobleck
started with $x
spent .25x, leaving .75x
spent .60*.75x = .45x
so, he spent a total of .70x
.30x = 9, so he spent (.70/.30)*9 = $21
You want |3x+4| < 0
now, come on -- you know that absolute values are never negative.
So, no solutions
spent .25x, leaving .75x
spent .60*.75x = .45x
so, he spent a total of .70x
.30x = 9, so he spent (.70/.30)*9 = $21
You want |3x+4| < 0
now, come on -- you know that absolute values are never negative.
So, no solutions
Answered by
NAME
where did you get .70?
Answered by
oobleck
.70 = .25 + .45
the amounts he spent
the amounts he spent
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