Commutative law: a+b=b+a thats it...
So 9+7 can also be written as 7+9=16
Answer: 7892
explanation: add each number individually left to right. 4+3 , 2+6 , 9+0 , 0+2
Answer:a) 870
b) 435
Step-by-step explanation:
a)
number of photos to be posted =n = 30
number of web pages on which they would be posted is 2
Since the order in which the photos appear on the web pages matters,
Number of ways = 30 permutation 2
=870 ways
b)
Since the order in which the photos appear on the web pages does not matter,
Number of ways = 30 combination 2
= 435 ways
the picture in the attached figure
we know that
area of the triangle is equal to
in this problem
A=47 in²
b=x
h=x
so
therefore
the answer is
x=9.7 in
