Since multiplication is commutative, you can change the order of the factors:
So, the numeric parti is simply
For the powers of ten, use the rule to write
So, the answer is
To write the answer is proper scientific notation, you can write it as
So, answers A and B represent the same number, and they are both correct. If you need the answer to be written in rigorous scientific notation, then answer is B.
Answer: a) The customers surveyed purchased only mysteries =12
b) The customers purchased mysteries and science fiction, but not romance novels=10
c) The customers purchased mysteries or science fiction=46
d) The customers purchased mysteries or science fiction, but not romance novels=44
e) The customers purchased exactly two types of books=21
Step-by-step explanation:
Given: n(S)=57
n(M)=33
n(S)=25
n(R)=18
n(M∩S)=12
n(R∩M)=9
n(S∩R)=6
n(R∩S∩M)=2
From the Venn diagram,
d=2
n(M∩S)=a+d=12
⇒a=10
n(R∩M)=b+d=9
⇒b=7
n(S∩R)=c+d=6
⇒c=4
Now, the customers surveyed purchased only mysteries=n(M)-a-b-d=33-10-7-4=12
The customers purchased mysteries and science fiction, but not romance novels=a=10
The customers purchased mysteries or science fiction=n(M∪S)=n(M)+n(S)-n(M∩S)=33+25-12=46
The customers purchased mysteries or science fiction, but not romance novels=n(M∪S)-d=46-2=44
The customers purchased exactly two types of books= a+b+c=10+7+4=21
Answer:
The area of the square lawn is
Step-by-step explanation:
Part 7)
Let
x ----> the length side of the square lawn in meters
we know that
The area of the path is equal to
----> equation A
----> equation B
so
Solve for x
The area of the square lawn is
substitute the value of x
