lena4042
lena4042
02-11-2019
Mathematics
contestada
twice the difference of a number and 9 is 7
Respuesta :
Jessicaalvarez2006
Jessicaalvarez2006
02-11-2019
(x-9)^2=7
“twice the difference of a number” would mean x-9 twice equals 7
Answer Link
ujalakhan18
ujalakhan18
02-11-2019
Answer:
x=12.5
Step-by-step explanation:
Let the number be x
2(x-9)=7
2x-18=7
2x=7+18
2x=25
x=25/2
x=12.5
Answer Link
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