The answer to your equation is 12 ½
Answer:
Correct option: first one -> 40
Step-by-step explanation:
To solve this problem, we can use a compound rule of three.
The quantity of chocolate and the weight of each chocolate are inversely proportional: to achieve the same earning, if we have more chocolate, we need less grams per chocolate.
Then, the rate of change in quantity multiplied by the rate of change in the grams will be equal to the rate of change in the final earning.
So we have that:
(3/20) * (14/X) = 21/400
42 / 20X = 21 / 400
1 / 10X = 1 / 400
10X = 400
X = 40 grams
Correct option: first one
Answer:
an ordered pair anywhere on the parabola
the coordinates for the vertex
the formula for vertex form
Step-by-step explanation:
The answer is 45 because you multiply 9 and 6
First we find the average cost per pound...
(7n)/7 = ($8.47)/7 = $1.21 per pound
(9n)/9 = ($11.07)/9 = $1.23 per pound
$1.21 is the cheapest price per pound, so 7 pounds for $8.47 is a better buy
Answer = 7 pounds for $8.47 is the best buy
