Formula-
If a set has “n” elements, then the number of subset of the given set is 2n and the number of proper subsets of the given subset is given by 2n-1. Consider an example, If set A has the elements, A = {a, b}, then the proper subset of the given subset are { }, {a}, and {b}
Symbol that can be used-
The symbol "⊆" means "is a subset of". The symbol "⊂" means "is a proper subset of".
Hope it helps you... pls mark brainliest if it helped you.
Answer:
213
Step-by-step explanation:
213
The given values of abscissa and ordinate in the given are that which
when substituted to the values of x and y in the equation will make the
equation true. This means that the left and right-hand side of the equation
will be equal. The established equations should have a basis of,
x + y = c
The equations are,
x + y = 6
Substituting x = 7 and y = -1,
7 + (-1) = 6 ; 6 = 6
The other two equations will be,
2x + y = 13 and,
x + 2y = 5
It is to be noted that countless of equations can be made with the given
solution so long as the equation is valid.
Answer:
slope =-1/14
Step-by-step explanation:
slope =(y1-y2)/(x1-x2)
slope=(1-2)/(-3--17)
slope=-1/14