Answer:
- rational
- irrational
- irrational
- irrational
- √7, it is irrational
Step-by-step explanation:
A <em>rational</em> number is one that can be expressed as the ratio of two integers. All fractions that have integer numerators and (non-zero) denominators are <em>rational</em> numbers. Any finite decimal number, or any repeating decimal number, is a rational number. These can always be expressed as the ratio of two integers. For example, 0.4040... = 40/99, and 0.286 = 286/1000.
To make an irrational sum, at least one of the contributors must be irrational. You want an irrational 2-number sum that has 7/8 as one of the contributors. Since 7/8 is rational, the other contributor must be irrational.
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<u>Step 1</u>. The number 7/8 is <em>rational</em>.
<u>Step 2</u>. The desired sum is <em>irrational</em>.
<u>Step 3</u>. The rule <em>rational + </em><em>irrational</em><em> = irrational</em> applies.
<u>Step 4</u>. An <em>irrational</em> number must be chosen.
Step 5. √7 will produce an irrational sum, because <em>it is irrational</em>.
There are an infinite number of possible common denominators.
The smallest one is 12 , and every multiple of 12 is another one.
Answer: I encourage you to ask real questions for the sake of others.
Step-by-step explanation: (thx for points tho :))
Answer:
only (2) and (4) are polynomial out of given options.
Step-by-step explanation:
Polynomial is an expression having variables having positive integer exponents with real constant coefficients. example 
We are given some polynomials and we have to choose whether are polynomial or not.
Consider ,
1) 
Since, Polynomial does not have a fractional exponent.
So, 1) Not a polynomial.
2) 
Since all of the variables have integer exponents that are positive this is a polynomial.
3) 
Not a polynomial because a term has a negative exponent
.
4) 
Since all of the variables have integer exponents that are positive this is a polynomial.
Thus, only (2) and (4) are polynomial out of given options.
-48
put it in a calculator, it'll spit the answer out
