Answer:
y=tan x and y=cotx
Step-by-step explanation:
We are given functions of all trignometric ratios and asked to find out which has range of all real numbers. Let us discuss one by one
1. y =sinx: False because -1≤sinx≤1 always
2. y=cosx:False because -1≤cosx≤1 always
3. y = tanx: True because tanx can take any value
4. y=cot x: True because cots x can take any value
5. y = csc x: False because this range does not lie between -1 and 1
6. y=sec xFalse because this range does not lie between -1 and 1
Answer:
is not a polynomial.
Step-by-step explanation:
Given : an expression ![X^{-6}](https://tex.z-dn.net/?f=X%5E%7B-6%7D)
We have to check whether given expression
is a polynomial or not.
An expression is said to be polynomial if it is the collection of constant and one or several variables having non negative integer power or degree.
Example : ![2x^2+3x+1, x^5,m^2+n^5](https://tex.z-dn.net/?f=2x%5E2%2B3x%2B1%2C%20x%5E5%2Cm%5E2%2Bn%5E5)
For the given expression
the variable term is X is having power of -6 which is negative.
Hence,
is not a polynomial.
120 is the correct answer
Sally purchased a TV from Rent-A-Center. She made her a down payment of $8.35x before she took her TV home. The down payment was the same amount as the payments she would continue to make monthly. Every month after that she made payments of $4.25x+36. Solve for x. (x=9, payments are $75.15)