Answer: StartFraction negative 1 plus-or-minus StartRoot 21 EndRoot Over 2
Step-by-step explanation:
The given quadratic equation is expressed as
x² = 5 - x
Rearranging the equation to take the standard form of ax² + bx + c, it becomes
x² + x - 5 = 0
The general formula for solving quadratic equations is expressed as
x = [- b ± √(b² - 4ac)]/2a
From the equation given,
a = 1
b = 1
c = - 5
Therefore,
x = [- 1 ± √(1² - 4 × 1 × - 5)]/2 × 1
x = [- 1 ± √(1 - - 20)]/2
x = [- 1 ± √21]/2
x = (- 1 + √21)/2 or x = (- 1 - √21)/2
Answer:
1.) 7
2.)7
3.)-7
4.)7
5.)7
Step-by-step explanation:
1.) Just count -2 to 5 with your hands
2.) since two negative signs make a addition sign when they are close to each other, you will just add 5 and 2.
3.) Just add 5 and 2 and add the negative sign before the number.
4.)Same as I said in number 2, it stays 7.
5.) Finally, as number 3, it will be -7 but because of the negative signs it will be 7.
Multiply 62 by 3 and you get 186
1. You can call
to the cost of each one of Tanya's items and
to the cost of each one of Tony's items.
2. Based on the information given in the problem and knowing that both paid the same amount of money, you can write the following expression:

3. You must solve for
:
4. The total amount of money that Tanya and Tony paid was:
dollars
5. Therefore, the amount of money that Tony paid for each item was:
dollars
The answer is: The individual cost of each Tanya's items is
dollars and the individual cost of each Tony's items is
dollars.