Andreamathematics

1 .Write down the elements of :   AUB  ={ A ∩ B ={ A - B= { B- A = { 2. Write    =  Belong  /  doesn´t Belong 1. a________________________ to group   B      2.   c_________________________to group A 3. e________________________ to group B        4.   h_________________________ to group B 3.I have a group of friends they play: Soccer:    150                     Basketball   200                    soccer and basketball:   50 Do the intersection in Venns diagram  how many friends does he  have ?

Write the following properties for whole numbers analyze anf If you have questions  , socializate next class! Properties of the whole numbers ·          Whole numbers are the natural number that starts with zero. The property of whole number includes Closure property of whole numbers Commutative property (addition and multiplication) of whole number Associative property(addition and multiplication) of whole number Multiplicative identity of whole number Zero property of addition of whole number Zero property of multiplication of whole number 1. Closure and Commutative property: Closure property: The closure property says that the addition of the two whole numbers will   give the whole number Let v and s are whole numbers Here (v+s) is a whole numbers For example: 1)     23 +23 = 46. 2)     11 +15= 26. 2. Commutative property (addition and multiplicatio...

1. Find the union of each of the following pairs of sets. (a)  A  = {1, 4, 7}       B  = {1, 2, 3} (b)  P  = {a, e, i, o, u}      Q  = {a, m, n, p}  2.  Find the intersection of each of the following pairs of sets. (a)  A  = {2, 4, 8, 10}       B  = {6, 8, 10, 12} (b)  C  = {p, q, r, s}       D  = {r, s}  3. If A = {a, b, c, d}   B = {b, c, d, e}   C = {c, d, e, f}   D = {d, e, f, g}, find (a) A - B (b) B - C (c) C - D (d) D - A  (e)  D- C

Activity in class :  solve the following operations   -120 + (-30) + [ -80 + (-120 / 4) ( -3) ]=  ·          -24 – 30 [-20 + (-40) + (-10+ (-3) ) (-4)]= ·          -40 -  (-20) (-5) + 8 – ( -7)= ·          -40 - 8-(-20 )/ (-10) + 4 = ·          -100  + (-120) [(-8 + 9 ) ( -20 – ( -4 ) ) ] Numbers sets: 1.        Rational Numbers A  Rational Number  is a real number that can be written as a simple fraction (i.e. as a  ratio ). Most numbers we use in everyday life are Rational Numbers. Example: 1,5 is a rational number  because 1,5 =  3/2  (it can be written as a fraction) 2...