Ok i can help you solve this problem do you know the formula for quadratic equations
Answer:
x = 9
Step-by-step explanation:
If you use the 20% off coupon your total will be $16.80.
+ Purchase Price = $21
- Discount (21 x 20)/100 = $4.20
<span>= Final Price 21 - 4.20 = $16.80
</span>
If you use the $5 dollars off coupon your total will be $16.00.
$21 - $5 = $16.00
The better coupon to use would be the five dollars off coupon because $5 dollars off will be 80 cents less than using the 20% coupon.
If you mean -1/3x try using y=3x
Answer:
p + q = (-2) --------(1)
p - q = 8 ----------(2)
<em><u>on</u></em><em><u> </u></em><em><u>s</u></em><em><u>i</u></em><em><u>m</u></em><em><u>p</u></em><em><u>l</u></em><em><u>i</u></em><em><u>f</u></em><em><u>y</u></em><em><u>i</u></em><em><u>n</u></em><em><u>g</u></em><em><u> </u></em><em><u>both</u></em><em><u> </u></em><em><u>equati</u></em>
8 + q = (-2)-q
q + q = (-2) -8
2q = (-10)
q = (-10)/2
q = (-5)
putting the value of q = (-5) in the equation
p + (-5) = (-2)
p = (-2)+5
p = 3
hence, p = 3 , q = (-5)