Bosco

   tan of what degree is 1/2     

   Use arctangent, the 2nd function of tan on the calculator

   tan^–1 (0.5000)  =  26.565^o     

   .

   If the minute hand of a clock is 12 cm long, how far does the tip of the hand move in 20 minutes?     

   In an hour, the minute hand goes all the way around, that is, 24 cm • π = 75.40 cm.     

   In a third of an hour, it goes a third of that circumference:  75.40 cm / 3 = 25.13 cm.     

   Do you know why we used 24 cm instead of 12 cm in the first step?     

   _.     

   find the value of W. write your answer in a decimal 4.3/?/W/?/?/7.8     

   You didn't say what you want to do with that.     

   So, I'm going to guess arithmetic sequence,     

   using d = 0.7    4.3 , 5.0 , 5.7 , 6.4 , 7.1 , 7.8     

   _.     

   1. The sum of 2 integers is -1. Their product is -12. What are the integers?     
   2. The sum of 2 integers is +2. Their product is -24. What are the integers?     

   1.  The two integers are +3 and –4.     

   2.  The two integers are +6 and –4.     

   _.     

   Use the digits 0 to 9, at most one time each, to fill in the boxes     

   so that the sum is as close to 10 as possible.     _._+_._=_._ _     

                                                                               2.4 + 7.6 = 10     

                                                                               4.3 + 5.7 = 10     

   There are lots more.  This is too easy.     

   I must be misunderstanding something.     

   _.     

   Jane averages 143 in her first six bowling games.     

   Her scores in her next four games are all the same.     

   If her bowling average over the ten games is also 143,     

   then what did she bowl in each of the final four games?     

   avg of 10 games is 143, so total of 10 games  =  1430     

   subtract total of 1st 6 games               143 • 6  =    858     

   need final 4 games to total           1430 – 858  =    572     

   divided among the 4 final games         572 / 4  =    143 each     

   _.     

   A bag contains red, blue and green marbles.     

   2/3 of the marbles are not red and     

   3/4 of the marbles are not blue.     

   What fraction of the marbles are not green? Express your fraction in lowest terms.     

   2/3 of the marbles are not red     ==>>   1/3 are red    =   4/12     

   3/4 of the marbles are not blue    ==>>   1/4 are blue  =   3/12     

                                                              total red & blue  =   7/12 (not green)     

   _.     

   What is 5.99 add 4.99     

   When I look at that, I see 6.00 less a penny plus 5.00 less a penny     

   equals 11.00 less two pennies, which, or course, would be 10.98.     

   _.