Mickey, Making errors could be that he must be found out that cost of one carton is $0.50, by dividing 12 cartons with total cost and by this e figured it out the cost of 7 carton is just $3.5.
In this question is arithmetic, what we have in, the question is 12 cartons of eggs cost $22.20. we need to find out the cost of seven cartons.
<h3>What is arithmetic?</h3>
In mathematics it deals with numbers of operations according to the statements.
Here, the cost of one carton is given by;
= 22.20/12 = $1.85
now the cost of seven cartons,
= 1.85 x 7 = 12.95 ≅ $ 13
Thus, Mickey made the mistake in his calculation and didn't get the right cost for seven cartons which is $13.
Learn more about arithmetic here:
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Answer:
y = 9
Step-by-step explanation:
Given y is directly proportional to (x - 1)² then the equation relating them is
y = k(x - 1)² ← k is the constant of proportionality
To find k use the condition x = 5 when y = 4
k = = = = , thus
y = (x - 1)² ← equation of proportion
When x = 7, then
y = × 6² = × 36 = 9
Answer:
9:5
Step-by-step explanation:
- 112 - 40 = 72. 112 represents the total time, but you are comparing music to commercials, so you have to subtract the commercial time from the total time.
- Find the GCF of 72 and 40, which is 8.
- Divide 72 and 40. The simplified ratio is 9:5.