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zepelin [54]
3 years ago
9

Find x if f(x) = 2x + 7 and f(x) = -1.

Mathematics
2 answers:
Yuri [45]3 years ago
8 0
Ok so i do not know if you mean to solve it?But the answer would be x=-4 if you solve the problem
Sloan [31]3 years ago
6 0
The answer we -9 because 2x-1 is -2 and -2+7= -9
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When measuring time, 8 concerts are approximately equal to 6 symphonies. How many symphonies are equal to 42 symphonies?
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So normally it is
if 8x is to 6y, then how many x is to 42y?
it could be
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 how many concerts are equal to 42 symponies
arrange in concerts to symponies format

8:6=x:42
fractionify
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multiply boht sides by 42
336/6=x
56=x
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 how many  symponies are equal to 42 concerts
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fractionify
6/8=x/42
multiply boht sides by 42
252/8=x
31.5=x
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so it could be


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or
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