英语翻译1.Two angles of an isosceles triangle measure 70°andⅩ°.W
英语翻译
1.Two angles of an isosceles triangle measure 70°andⅩ°.What is the sum of the three possible values of
2.Andy and Bethany have a rectangular array of numbers with 40 rows and 75 columns.Andy adds the numbers ineach row.The average of his 40 sums is A.Bethany adds the numbers in each colunm.The average of her 75 sums is B.What is the value of A/B?
3.How many whole numbers between 1 and 1000 do not contain the digit
4.On the last day of school,Mrs.Wonderfui gave jelly beans to her class.She gave each boy as many jelly beans as three were boys in the class.She gave each girl as many jelly beans as there were girls in the class.She brought 400 jelly baens,and when she finished,she had six jelly beans left.There were two more boys than girls in her class.How many students were in her class?
5.The letters A,B,Cand D all represent digits.what digit does D represent?
6.On a checkerboard composed of 64 unit squares,what is the probability that a randomly chosen unit square does not touch the outer edge of the board?
7.A one-cubic-foot cube is cut into four pieces by three cuts parallel to the top face of the cube.The first cut is ½ foot from the top face.The second cut is 1/3 foot below the first cut,and the third cut is 1/17 foot below the second cut.From the top to the bottom the pieces are labeled A,B,C and D.The pieces are then glned together end to end in the order C,B,A,D to make a long solid as shown below.What is the total surface area of this solid in square feet?