All families in a given nation with four children were asked to report the sexes of the children. What percent of families would be expected to have children who are all boys? Write your answer as an exact percentage.

step-by-step explanation:

this is not a question

"standard form:

3x2 + 14x − 10 = 0

solutions based on quadratic formula:

x1   = −14 − √ 142 − 4×3×(−10) /   2×3   = −14 − 2 × √ 79 /   6   ≈ −5.296

x2   = −14 + √ 142 − 4×3×(−10) /   2×3   = −14 + 2 × √ 79 /   6   ≈ 0.629

p

step-by-step explanation: