Answer:b
Step-by-step explanation:
<span>The answer to what you are looking for is 3x(3x+2)</span>
Rational numbers are numbers that can be expressed as a fraction (ratio). Irrational numbers can not be expressed like that (like sqrt(2)).
To prove your statement, assume the opposite until you have a contradiction.
If the result of adding them would be rational, then your irrational number can be expressed as the difference of two rational numbers, which itself is also a rational number. That cannot be, because it should be an irrational number. This contradiction forces that rational + irrational = irrational.
You can reason the same way for multiplication. Suppose rational * irrational = rational, you find that your irrational can be expressed as the fration of two rationals, which is a contradiction.
Answer:
1.2×1.3=1.56
Step-by-step explanation:
1.2 ×1.3=1.56
Answer:
- Keisha is right.
- No, only 1 ratio works
Step-by-step explanation:
- You want the units to be dollars / mango.
- You have 10 dollars. How many mangos can you buy and at what price. They are selling mangoes for more than a dollar each.
- The answer should be $1.25 per mango. Think of it this way:
- If the cost of a mango was $1.00 you would be able to get 10 of them. Do you agree? Since you can only get 8, they must be more than a dollar each.
- The ratio can only be written in one way. 10/8 = 1.25
Answer
- Keisha is right.
- No, only 1 ratio works
