Explicación paso a paso:
¿Qué valor debe tener k para que el △ABC sean semejante al △DEF?
Hallamos k:
15/10 = 18/(4k+10)
(15)(4k+10) = (18)(10)
60k + 150 = 180
60k = 180 - 150
60k = 30
k = 30/6
k = 20
Hallamos B:
15/B = 18/(4k+10)
15/B = 18/(4(20)+10)
15/B = 18/(80+10)
15/B = 18/90
(15)(90) = (18)(B)
1350 = 18B
1350/18 =B
75 = B
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Explicación paso a paso:
¿Qué valor debe tener k para que el △ABC sean semejante al △DEF?
Hallamos k:
15/10 = 18/(4k+10)
(15)(4k+10) = (18)(10)
60k + 150 = 180
60k = 180 - 150
60k = 30
k = 30/6
k = 20
Hallamos B:
15/B = 18/(4k+10)
15/B = 18/(4(20)+10)
15/B = 18/(80+10)
15/B = 18/90
(15)(90) = (18)(B)
1350 = 18B
1350/18 =B
75 = B