Number of proper subsets = 2^number of elements- 1
= 2^n - 1
No of elements = 4
2^4-1 = 16-1 = 15
Answer:
3ab
-------------------
(b+a)
Step-by-step explanation:
3/a - 3/b
-------------------
1/a^2 - 1/b^2
Multiply the top and bottom by a^2 b^2/ a^2/b^2 to clear the fractions
(3/a - 3/b) a^2 b^2
-------------------
(1/a^2 - 1/b^2) a^2b^2
3ab^2 - 3 a^2 b
-------------------
b^2 - a^2
Factor out 3ab on the top
3ab( b-a)
-------------------
b^2 - a^2
The bottom is the difference of squares
3ab( b-a)
-------------------
(b-a) (b+a)
Cancel like terms from the top and bottom
3ab
-------------------
(b+a)
The whole number of
is 
Further explanation:
Always use the PEDMAS rule to solve the grouping of multiplication, addition, subtraction and division.
Here, P is parenthesis, E is exponents, M is multiplication, D is division, A is addition and S is subtraction.
Given:
The number is 
Explanation:
The whole numbers is the series of numbers that starts from zero.
The natural numbers are those numbers that start from one.
The place values are only natural numbers.
The base ten systems represent the position of a place value.
The given number is 
Consider the number
as
.

Divide 1 by 4 to obtain the whole of 

The decimal expansion of
is 
The whole number of
is 
Learn more
- Learn more about the polynomial brainly.com/question/12996944
- Learn more about logarithm model brainly.com/question/13005829
- Learn more about the product of binomial and trinomial brainly.com/question/1394854
Answer details:
Grade: High school
Subject: Mathematics
Chapter: Number system
Keywords: place value, base value, decimal expansion, whole number, natural number, division, multiplication, subtraction, solve the equation, solution, linear equation, line, decimal.
Answer:
6.8 cubic feet
Step-by-step explanation:
7.3/4=1.825, which is the side length, 1.825*1.825=20.2575 and then ypu divide 20.2575 by 3 because it is a pyramid and that gives you 6.7525
1/3*4= 4/12
3/4*3= 9/12
Answer is 4/12 and 9/12.