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Troyanec [42]
3 years ago
14

Marta brought new fish for her home aquarium. She brought 3 guppies and 2 platies for a total of $13.95. Hank also brought guppi

es and platies for a total of $18.33. Find the price of a guppy and the price of a platy.
Mathematics
2 answers:
Marizza181 [45]3 years ago
7 0
Idk main math is pretty hard u know
KATRIN_1 [288]3 years ago
6 0

Answer: the price of a guppy is $3.19 and the price of a platy is $2.19

Step-by-step explanation:

Let x represent the price of a guppy.

Let y represent the price of a platy.

Marta brought 3 guppies and 2 platies for a total of $13.95. It means that

3x + 2y = 13.95 - - - - - - - - - - - 1

Hank also bought 3 guppies and 4 platies for a total of $18.33. It means that

3x + 4y = 18.33 - - - - - - - - - - - 2

Subtracting equation 2 from equation 1, it becomes

2y - 4y = 13.95 - 18.33

- 2y = - 4.38

y = - 4.38/ - 2

y = 2.19

Substituting y = 2.19 into equation 1, it becomes

3x + 2 × 2.19 = 13.95

3x + 4.38 = 13.95

3x = 13.95 - 4.38 = 9.57

x = 9.57/3 = 3.19

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I am Lyosha [343]

Answer:

The distance is 997.5 ft.

Step-by-step explanation:

Given:

Length of Brooklyn Bridge = 5,985 ft.

Width of Brooklyn Bridge = 85 ft.

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Substituting the value of length to find distance we get;

Distance = \frac{1}{6}\times 5985 = 997.5 ft.

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5 0
3 years ago
Sarah belongs to a gym and health spa that is conveniently located between her home and her job. It is one of the nicer gyms in
Vera_Pavlovna [14]

Answer:

1) She would save money if she paid per-visit. She would only pay %72 of what she pays monthly

2) She goes to the gym %43 of the days of the year

3) If she goes every day to the gym, she would spend $150 per month if she paid per-visit, that is %67 more than the $90 monthly fee

Step-by-step explanation:

1) She goes to the gym 3 times per week, so she goes 3*4.3 = 12.9 times per month. Thus, if she were to pay only $5 per day instead of a monthly membership, she would spend 5*12.9 = $64.5 per month.

Therefore, she would save money if she paid on a per visit basis, by using a rule of three, we can conclude that she would spend only 64.5*100/90 = %72 of her monthly $90 fee.

2) If she goes 3 times per week, she is going 3 days out of 7, thus, she is going 3*100/7 = %43  days of the year.

3) If a month has 30 days, then she would spend 30*5 = $150 if she paid per-visit and she went to the gym every day. That is $60 more than the $90 she spends for her monthly membership, in other words, it is 60*100/90 = %67 more than the %90 monthly rate.

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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