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Komok [63]
3 years ago
14

Apples are on sale for $3.12 per kilogram. Is the total cost of the apples proportional to the total mass?

Mathematics
2 answers:
s344n2d4d5 [400]3 years ago
6 0

Answer: Yes

Tc = 3.12m

Therefore, total cost of apple is directly proportional to the total mass with a proportionality constant of 3.12.

Step-by-step explanation:

The total cost of the apples is proportional to the total mass. The product of the mass and the cost per mass ($3.12) gives the total cost.

It can be shown using the equation below

Tc = c×m

Where Tc = total cost

c = cost per unit mass

m = total mass in kilogram

Tc = 3.12m

Therefore, total cost of apple is directly proportional to the total mass with a proportionality constant of 3.12.

Arisa [49]3 years ago
3 0

Answer:

Yes.

Step-by-step explanation:

We have given the price of apple per kilogram.

Hence, price of total apples is equal to the product of number of apples and price per kilogram of apple.

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GuDViN [60]

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Luigi uses 39 cups of flour for every 6 pizzas he makes.Complete the table using equivalent ratios. Pizzas
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Answer:

Part 1) The number of cups of flour needed to make 4 pizzas is 26

Part 2) The number of pizzas Luigi can make with 13 cups of flour is 2

Step-by-step explanation:

we know that

Luigi uses 39 cups of flour for every 6 pizzas he makes

Let

y ----> the number of cups of flour used

x ---> the number of pizzas he makes

In this problem

The relationship between the variables x, and y, represent a proportional variation

we have the ordered pair (6,39)

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\frac{y}{x}=\frac{39}{6}

Part 1) Find out the number of cups of flour needed to make 4 pizzas

using a proportion

\frac{y}{4}\ \frac{cups\ of\ flour}{pizzas}=\frac{39}{6}\ \frac{cups\ of\ flour}{pizzas}

Solve for y

y=\frac{39}{6}(4)

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Part 2) Find out the number of pizzas Luigi can make with 13 cups of flour

using a proportion

\frac{13}{x}\ \frac{cups\ of\ flour}{pizzas}=\frac{39}{6}\ \frac{cups\ of\ flour}{pizzas}

Solve for x

x=13(6)/39

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I think 2.333333333

Step-by-step explanation:

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7.61 is the answer

Hope it helps!
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