Answer: a = 2
Step-by-step explanation: combine both sides. Remove variable by dividing, answer is 2
The starting prices for both of the books are at 100%, and taking 25% from the second book it would be 75%. You will have 75% of each value of the books while they're on sale, which you can convert to decimal .75. Multiply this decimal by each of the books' values to figure out how much they'll be on sale and then add them, which would total up to 36 + 18= 54$. By dividing this value by the book's original value, 60$, would equal it to .9. Converting the .9 to a percent and subtracting it by 100%, It's reduced by 10%.
Answer:
infinity and positive infinity are the same
Answer:
![$\[x^2 + 22x + 121\]$](https://tex.z-dn.net/?f=%24%5C%5Bx%5E2%20%2B%2022x%20%2B%20121%5C%5D%24)
Step-by-step explanation:
Given
![$\[x^2 + 22x + \underline{~~~~}.\]$](https://tex.z-dn.net/?f=%24%5C%5Bx%5E2%20%2B%2022x%20%2B%20%5Cunderline%7B~~~~%7D.%5C%5D%24)
Required
Fill in the gap
Represent the blank with k
![$\[x^2 + 22x + k\]$](https://tex.z-dn.net/?f=%24%5C%5Bx%5E2%20%2B%2022x%20%2B%20k%5C%5D%24)
Solving for k...
To do this, we start by getting the coefficient of x
Coefficient of x = 22
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Divide the coefficient by 2
Take the square of this result, to give k
Substitute 121 for k
The expression can be factorized as follows;
<em>Hence, the quadratic expression is </em><em></em>
