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1. The denominator od a fraction is 2 less then three times the numerator. if the numerator is decreased by 3 and the denominator is increased by8, the value of the resulting fraction is 2/. find...

nvolving the selection of digits from a set. Assume that you select digits from the set {1,2,4,7} to form a number between 10 and 700. (1) How many such numbers can be formed if digits are...

#1: If  F1= 740 F2= 195 F3= 1110 F4= 333 What's F5?   #2: F1=10 F2= 630 F3= 330 F4=?

George Stoia earns \$2,000 per month plus 5% commission on the amount of sales. George's goal is to earn a minimum of \$3,400 per month. What amount of sales will enable George to earn \$3,400 or more...

The men in your class had an average score of 60% on the last test, and the women had an average of 80%. Is the class average necessarily 70%? Explain

The sales tax in your friend’s state just went from 5% to 6%. Your friend says that’s not bad—it’s only a 1 percent increase. In what way is your friend correct? In what way is your friend incorrect...

There are 52 students in your class. The top 26 students averaged 90% on the last test, and the bottom 26 averaged 70%. Is the class average 80%? Explain.

A chemist mixes a silver alloy AG1 costing \$13 per ounce with another silver alloy AG2 costing \$17 per ounce to make 10 oz of a new alloy. If the chemist wants the new alloy to cost between \$15 and...

There are 5 different letters on the blackboard. Joanne randomly picks 3 of the letters and uses them to make different arrangements of letters can she make?

A tea merchant mixes some black tea costing \$42 per pound with 3 lb of Earl Grey tea costing \$50 per pound. How many pounds of the black tea should be used if the merchant wants a blend that costs...

f(g(x)) = x f(g(x)) = x and g(f(x)) = –x f(g(x)) = g(f(x) f(g(x)) = x and g(f(x)) = x

The pressure in a gastank is 10bars. Calculate the pressure in the gastank as the temprature goes from 20C to 95C   My calculations: 273.15+95= 368.15K 273.15+20= 293...