Answer: 
Step-by-step explanation:
Given :
re - writing the equation , we have
we need to find the value of a and b for which -2<x < 4 , this means that the roots of the quadratic equation are -2<x < 4.
The formula for finding the quadratic equation when the roots are known is :
- sum of roots(x) + product of root = 0
sum of roots = -2 + 4 = 2
product of roots = -2 x 4 = -8
substituting into the formula , we have:
, which could be written in inequality form as
comparing with , it means that :
Jessica purchased a DVD that was on sale for 12% off.
The sales tax in her county is 3%.
Let, y represent the original price of the DVD.
We can simply solve this mathematical problem by using the following mathematical process.
Here, we will form an algebraic expression, according to the given data.
So,
The original price of the DVD = y
Discount on the original price :
y * 12/100
=3y/25
Price after discount :
y - 3y/25
=25y - 3y/25
=22y/25
Sales tax amount :
22y/25 * 3/100
11y/25 * 3/50
=33y/1250
Final price including the sales tax :
22y/25 + 33y/1250
1100y + 33y/1250
1133y/1250
(This will be considered as the final result.)
Learn more about sales tax here:brainly.com/question/9437038
#SPJ4
Answer:
It's 1/4, in its simplest form
It cannot be a mixed number
EXPLANATION:
You're welcome. You find the least common denominator for the two fractions, and that is 60.
Then multiply the numberator and denominator by the number that makes the denominator common. For instance, for 5/10 we would use 6. 10 TIMES 6 IS 60, AND 5 TIMES 6 IS 30. Now its 30/60
We do the same for fraction 2:
12 TIMES 5 IS 60, AND 3 TIMES 5 IS 15. Now its 15/60
Your new question is 30/60 MINUS 15/60. = 15/60. 15/60 reduces to 1/4. I HOPE YOU UNDERSTAND :)))
Answer:
thanks!
Step-by-step explanation:
Answer:
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