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Mrac [35]
3 years ago
14

X + y = 9/x - y = 5?????

Mathematics
1 answer:
adell [148]3 years ago
7 0

Answer:

y=2

x=7

Step-by-step explanation:

subtract equation 1 from 2

0+2y=4

y=2

substitute y into equation 1

x+2=9

x=9-2

x=7

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I need help with this.
leonid [27]
You are basically just comparing the ratios (the ratios will have to be the same for both for it to be the correct answer)
so for choice A you would do:
116.5cm:845km =0.14
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these are not equal so it would not be correct

the correct answer would be B because:
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4 years ago
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3 years ago
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TiliK225 [7]

Answer:

if your looking for x then

Step-by-step explanation:

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6 0
4 years ago
Read 2 more answers
97. An elevator in a tall building goes up 7 floors, then
Komok [63]

so, start floor = x

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