Answer:
![\frac{x^2}{7}+1 \text{ is a polynomial;}\\-2x^3+2x+4 \text{ is a polynomial;}\\x^{-3}+4x \text{ is not a polynomial;}\\\text{and }6x-x^3+4x^2 \text{ is a polynomial.}](https://tex.z-dn.net/?f=%5Cfrac%7Bx%5E2%7D%7B7%7D%2B1%20%5Ctext%7B%20is%20a%20polynomial%3B%7D%5C%5C-2x%5E3%2B2x%2B4%20%5Ctext%7B%20is%20a%20polynomial%3B%7D%5C%5Cx%5E%7B-3%7D%2B4x%20%5Ctext%7B%20is%20not%20a%20polynomial%3B%7D%5C%5C%5Ctext%7Band%20%7D6x-x%5E3%2B4x%5E2%20%5Ctext%7B%20is%20a%20polynomial.%7D)
Step-by-step explanation:
A polynomial is the sum or difference of one or more monomials. A monomial is a constant, a variable, or the product of constants and variables. It does not include negative exponents.
The first choice is a polynomial because the only terms are variables with positive exponents and constants.
The second choice is a polynomial because the only terms are variables with positive exponents and constants.
The third choice is not a polynomial because the first term has a negative exponent.
The fourth choice is a polynomial because the only terms are variables with positive exponents and constants.
Both of the statements are Theorems. Postulates are assumed to be true so they are really obvious things like a line has at least two points.
.23 times 5 is 1.15
the answer would be she used 1.15 feet of ribbon
Answer:
3/10
Step-by-step explanation:
because if you use a calculator that answer would be 0.9 which is 9/10 as a decimal and if u did it yourself then you would do 1/3 x 9/10 and you would get 9/30 which is 3/10 if u simplify it