4d7racqmqx
4d7racqmqx
22-10-2021
Mathematics
contestada
help with 14 please!!! please also explain!!
Respuesta :
mhanifa
mhanifa
22-10-2021
Answer:
f = ab/(a + b)
Step-by-step explanation:
#14
Given:
1/f = 1/a + 1/b
Solving for f:
1/f = b/ab + a/ab
1/f = (a + b)/ab cross - multiply
f(a + b) = ab divide by (a + b)
f = ab/(a + b)
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