13.60 because you add the coupon discount back on and subtract tax cost and divide by 2
I think x = 2, but im sorry if thats wrong
Answer:
x=4
Step-by-step explanation:
First brand = A, second brand = B.
A + B = 249ml
9% A + 14% B = 13% 249ml
B = 249ml - A
9% A + 14% (249ml - A) = 13% 249ml
9A + 14 (249ml - A) = 13 * 249ml
9A + 3486ml - 14A = 3237ml
5A = 249ml
A = 49,8ml
<span>B = 249ml - A = 199,2ml
</span>
Answer: He should use 49,8ml of first brand and 199,2ml of second brand.
Also note: <span>That's an </span>approximation,<span> because </span>the volumes are not strictly additive<span>. For example: mixing 50ml pure ethanol with 50ml water will give you about 95ml of mixture. To get an accurate answer, you'd have to </span>measure<span> the volume of the final mixture and then divide your total alcohol content by </span>that<span>.</span>
Answer:
-3 and 1
Step-by-step explanation:
The zero(root, range) of a parabola is where the parabola touches the x axis, here you can see that the parabola touches 1 and -3 on the x axis, hence that is the root.
