elm11341 elm11341
  • 14-07-2017
  • Mathematics
contestada

x varies directly as y, and x = 153 when y = 9. Find x when y = 13.

Respuesta :

musiclover10045
musiclover10045 musiclover10045
  • 14-07-2017

153/9 = x/13

153 x 13 = 1989

1989/9=221

x = 221

Answer Link
choixongdong
choixongdong choixongdong
  • 14-07-2017
y = kx
9 = 153k
k = 9/153
k = 3/51

so if y = 13 then
13 = 3/51 x
x = 13 (51/3)
x = 221

answer
x = 221 when y = 13.
Answer Link

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