The hernandez family has six
baby-sitters whom they call regularly.
four of the baby-sitters are boys and
two are girls. if they randomly call
one of the baby-sitters, what is the
chance that it will be a boy? show work

From 1990 to 2008, by what percent did the world’s most developed economies cut their greenhouse gas emissions?

What former head of the cuban secret service was charged with protecting the country's prime minister for nearly 50 years?

Which statements describe how reformers fought for social change in the progressive era? check all that apply. 1. they founded a state university to promote industrialization. 2. they began a civil rights movement to promote equality between races. 3. they made it legal to manufacture and sell alcohol. 4. they built thousands of new schools and required attendance. 5. they promoted abstinence from alcohol and supported prohibition.