A.23h B.30h3+4h2 C.3h2+20h D.15h4+ 20h
2.ill in the brackets with’<’ or’>’
12 (?) 21 23(?)32 34(?)43 45(?)54
According to the patterns,if n>3, n n+1 (?) (n+1)n
3.express the following statements in algebraic inequalities
a)a is larger than the sum of 3 and b a__
b)the product of m and n is smaller than 48 48__
c)the different between 10 and x is smaller than the sum of y and 20. 10-x___
更新1:
4.which of the following sets of values does not satisfy the inequality [(2/3)x]-0.5y 10? A.x=9,y=4 B.x=12,y=-4 C.x=12,y=-8 D.x=15,y=2 5.a car production line manufactured some car components.if one more piece was manufactured than the target quantity every day,the number of car components
更新2:
manufactured in 8 days would be more than 100 pieces. If one less piece was manufactured than the target quantity every day,the total number of car components manufactured in 8 days would be less than 90 pieces. What is the daily quantity? (the number of pieces should be an integer)
