The quadratic equation which has solutions x=8 and x=-1 is x² - 7x - 8 = 0.
To find the quadratic equation with solutions x=8 and x=-1, we can use the property that in a quadratic equation ax²+bx+c=0, the sum of the roots is equal to -b/a, and the product of the roots is equal to c/a.
As we know the solutions here are x=8 and x=-1, therefore: sum of roots = 8 + (-1) = 7. product of roots = 8 * -1 = -8. Assuming 'a' as 1 (for simplicity), our quadratic equation would be x² - 7x - 8 = 0. So this is the quadratic equation that has solutions x=8 and x=-1.
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Choose exactly two answers that are correct.
A.
(5 • 2) + 4 (use the associative property)
B.
5 • 2 + 4 (use the distributive property)
C.
5 • 6 (use order of operations)
D.
5 • 2 + 5 • 4 (use the distributive property)
To solve a kind of question like this and to have a better understanding while solving it. It is pertinent to list out the parameters given:
List of Items bought by Nicole:
If Nicole gave her mother the money $40 for babysitting, and:
Her mother paid back $5.26 out of it.
Then, the total amount of money Nicole's mother owed Nicole can be calculated by adding the items Nicole bought with the amount her mother paid her back, then we will subtract the total amount from the money Nicole gave her mother for babysitting.
Mathematically, we have:
= $(9.75 + 29.99 + 15+ 5.26) - $(40)
= $60 - $40
= $20
Therefore, we can conclude that the amount of Money Nicole's mother owed Nicole for babysitting is $20
Learn more about arithmetic operations here:
To figure this out just add:
9.75 + 29.99 + 15 + 5.26 = $60 Since this is $20 more than Nicole gave her mom that means she made $20 baby sitting. There's your answer!