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VARVARA [1.3K]
3 years ago
8

What is the constant of proportionality in the equation y =2.5xy=2.5 xy

Mathematics
2 answers:
Inessa [10]3 years ago
8 0
What is the constant of proportionality in the equation y =2.5x

2.5
kenny6666 [7]3 years ago
5 0

Answer: 2.5

Step-by-step explanation:

We know that the constant of proportionality is the ratio between two directly proportional quantities.

The equation of direct variation between two quantities x and y is given by :-

y=kx, where k is the constant of proportionality,

The given equation : - y =2.5xy

When we compare to the general direct variation equation , we get

k=2.5

hence, the constant of proportionality in the equation  2.5

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yKpoI14uk [10]

Answer:

Option C is the correct answer

Step-by-step explanation:

C. Multiply both sides of the equation by 20

7 0
2 years ago
Bethany opened a store credit card to purchase a TV for $589. She put the entire purchase on the credit card. Her APR is 29.99%
7nadin3 [17]
Original debt = $589
APR = 29.99%
The monthly rate is 0.2999/12 = 0.02499

After 1 month:
Amount owed = 589*1.02499 = $603.72
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New balance = $603.72 - 30.187 = $573.53

After 2 months:
Amount owed = 573.53*1.02499 = $587.87
5% payment = 0.05*587.87 = $29.39
New balance = 587.87 - 29.39 = $558.48

After 3 months:
Amount owed = 558.48*1.02499 = $572.44
5% payment = 0.05*572.44 = $28.62
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Answer: $543.82

4 0
2 years ago
Which biconditional is NOT a good definition?
Hitman42 [59]

Answer:

c

Step-by-step explanation:

An angle is straight if and only if it’s measure is 180.

4 0
3 years ago
Rocko paid $12.50 for 25 game tickets.
soldi70 [24.7K]

Answer:

The constant of proportionality is 0.5      

Step-by-step explanation:

We are given the following in the question:

Cost of 25 game tickets = $12.50

Cost of 35 game tickets = $17.50

The cost of ticket C(n) is directly proportion to the number of tickets n.

Thus, we can write:

C(n) \propto n\\C(n) = an

where a is the constant of proportionality.

Putting values, we get,

12.50 = 25a\\\\\Rightarrow a = \dfrac{12.50}{25}\\\\\Rightarrow a  = 0.5

Thus, the constant of proportionality is 0.5

3 0
2 years ago
Why is ratio 2:5 different from ratio 5:2? Please my hw is due time!
Helen [10]
It's different because they're comparing two different ways

Example:

2 red apples, 5 apples in total- The ratio would be 2:5

5 green apples, 2 red apples- The ratio would be 5:2

I don't understand my own example but whatever.
7 0
2 years ago
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