es la probabilidad de tener tres hijos del mismo sexo
Answer:
69
Step-by-step explanation:
Answer:
The first one: 19/15a
second one: b²-4ac = D
Step-by-step explanation:
for first one: take LCM and solve
for second one: you square the expression on both sides then b²= D + 4ac, then when you take 4ac to the left hand side, it becomes b²-4ac= D
The fraction between 1/2 and 2/2 is 1/4
Answer:
Step-by-step explanation:
Let her brother's age be x
Sarah is 2x + 4