6+5+11+15=37
so she sold 37 cups of lemonade in 4 hours
Answer:
4 with 3
Step-by-step explanation:
the only ones that are perpendicular to each other are
y = 7/4 x - 2 with y = - 4/7 + 2
since the condition is met so that two lines are perpendicular
slope1 * slope2 = -1
7/4 * -4/7 = -1 correct
Answer:
16.35
Step-by-step explanation:
Calculator
Answer: The sum of the interior angles of a heptagon is 900 degrees.
Answer:
Step-by-step explanation:
Given the set notations A = {a} B = {b, c} C = {a, b, d}
BUC = {a, b, c, d}
B∩C = {b}
a) A × (BUC) = {aa, ab, ac, ad}
b) A × (B ∩ C) = {ab}
c) (A × B) ∪ (A × C)
A × B = {ab, ac} and A × C = {aa, ab, ad}
(A × B) ∪ (A × C) = {aa, ab, ac, ad}
d) For (A × B) ∩ (A × C)
(A × B) ∩ (A × C) = {ab}
Note that the union (U) of two sets is the combination of all the elements in both sets while the intersection (∩)of two sets is the common elements that are found in both sets.
The Cartesian product of two sets is derived by mapping each of the element in the first set with all the element in the other set. It is denoted by the multiplication sign.
