Gruesomeguy

well done

A certain jar contains only B black marbles, W white marbles, and R red marbles, if one marble is to be chosen at random from the jar, is the probability that the marble chosen will be red greater than the probability that marble chosen will be white? 1). r/(b+w)> w/(b+r) 2). b-w > r

From a group of 21 astronauts that includes 12 people with previous experiences in space flight, a 3 person crew is to be selected so that exactly 1 person in the crew has previous exp in space flight. How many different crews of this type are possible? A.) 432 B.) 594 C.) 864 D.) 1330 E.) 7980

OA must be wrong. It should be D 1. A 1972 agreement between Canada and the United States reduced the amount of phosphates that municipalities had been allowed to dump into the Great Lakes. (A) reduced the amount of phosphates that municipalities had been allowed to dump (B) reduced the phosphate amount that municipalities had been dumping © reduces the phosphate amount municipalities have been allowed to dump (D) reduced the amount of phosphates that municipalities are allowed to dump (E) reduces the amount of phosphates allowed for dumping by municipalities

So poorly educated and trained are many young recruits to the United States work force that many business executives fear this country will lose its economic preeminence. (A) So poorly educated and trained are many young recruits to the United States work force that (B) As poorly educated and trained as many young recruits to the United States work force are © Because of many young recruits to the United States work force who are so poorly educated and trained. (D) That many young recruits to the United States work force are so poorly educated and trained is why (E) Many young recruits to the United States work force who are so poorly educated and trained explains why

During the 1980’s approximately $50 billion in private investment capital is estimated to have left Mexico and added to the strain on the country’s debt-ridden economy. (A) During the 1980’s approximately $50 billion in private investment capital is estimated to have left Mexico and added (B) During the 1980’s it is estimated that approximately $50 billion in private investment capital left Mexico and added © It is estimated that there was approximately $50 billion in private investment capital that left Mexico during the 1980’s and added (D) It is estimated that during the 1980’s approximately $50 billion in private investment capital left Mexico, adding (E) Approximately $50 billion in private investment capital is estimated as having left Mexico during the 1980’s, adding

what is wrong with A?

Over the course of the eighteenth century, the average output of ironwork tripled as a result of several improvements in blowing machinery and because coal replaced charcoal as the fuel used in the smelting of iron ore. Over the course of the eighteenth century, the average output of ironwork tripled as a result of several improvements in blowing machinery and because coal replaced charcoal as the fuel used in the smelting of iron ore. -> Not parallel Over the course of the eighteenth century a tripling in the average output of ironwork was due to the replacement of charcoal by coal for the fuel used in the smelting of iron ore, in addition to several improvements in blowing machinery. ->Not Parallel With charcoal’s being replaced by coal as the fuel used in the smelting of iron ore and several improvements in blowing machinery, the average output of ironwork tripled over the eighteenth century.->Not the best but only remaining option The replacement of charcoal with coal for the fuel used in the smelting of iron ore and several improvements in blowing machinery, the average output of ironwork tripled over the eighteenth century. ->does not make sense Charcoal being replaced by coal as the fuel used in the smelting of iron ore, and several improvements in blowing machinery, which tripled the average output of ironwork over the course of the eighteenth century. ->does not make sense

I am still confused how A is sufficient. Can anyone explain?

A committee of three people is to be chosen from four married couples. What is the number of different committees that can be chosen if two people who are married to each other cannot serve on the committee? A.) 16 B.) 24 C.) 26 D.) 30 E.) 32

OA is B. Thanks for the explanation

A three-digit code for certain logs uses the digits 0,1,2,3,4,5,6,7,8,9 according to the following constraints. The first digit cannot be 0 or 1, the second digit must be 0 or 1, and the second and the third digit cannot both be 0 in the same code. How many different codes are possible? A.)144 B.)152 C.)160 D.)168 E.)176 Please Explain

How many different factors does the integer n have? 1.)N = a4b3, where a and b are different positive prime numbers. 2.)The only positive prime numbers that are factors of n are 5 and 7. Please Explain

I picked A too but A is not the OA

1000 Sc