3.5,1.75
7/2,3.5/2
Those 2
Answer:

Step-by-step explanation:
Given
See attachment for circles
Required
Ratio of the outer sector to inner sector
The area of a sector is:
For the inner circle

The sector of the inner circle has the following area

For the whole circle

The sector of the outer sector has the following area

So, the ratio of the outer sector to the inner sector is:


Cancel out common factor

Express as fraction

These symbols are called operators.
Mathematics is the science that relates everyday practices and nature to human reasoning and numerical logic.
<h3>Math Operations</h3>
The four basic math operations are present in your day-to-day life, for example: when you pay your bills. The math operations are:
- addition - represented by symbol "+"
- subtraction - represented by symbol "-"
- multiplication - represented by symbol "x"
- division - represented by symbol "÷"
These symbols, also, are known as arithmetic operators.
Note that in math expressions, it is necessary to apply the rule of operations: parentheses, exponents, multiplication/division, and addition/subtraction.
Learn more about math operations here:
brainly.com/question/4721701
Answer:
10 plus -4
Step-by-step explanation:
1980
660 --> 12
X --> 36
________
36 / 12 = 3
X = 3
660 x 3 = 1980