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Licemer1 [7]
4 years ago
5

X + 5y = 8 -x + 2y = -1 How to solve this?

Mathematics
1 answer:
ira [324]4 years ago
4 0

Answer:

x+5y=8

-5 -5

----------

x=3

-x+2y=-1

-2 -2

------------

-x

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You work as a Teller at a bank. A customer wants to deposit three checks in the amounts of $532, $610 and $150. What is the tota
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The total deposit is 1,292
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3 years ago
Read 2 more answers
Please help me BRAINLIEST+STARS+THANKS+POINTS
LUCKY_DIMON [66]

Hello, well there are a few ways to write this. Here is one outlook.


Bruce bought three boxes of tiles with the same number of tiles in each.

x = number of tiles

3 = number of boxes

3x = total number of tiles.

Make note, the problem is asking for an expression for how many tiles he used and not the total number of tiles he has. Anyways, the problem then tells us he had to go get 3 more boxes but he used only 2 tiles out of the last box. So he used 2x + 2 tiles We put this together and we have

3x + 2x + 2

5x + 2

Number of tiles Bruce used = 5x + 2


We do the same for Felicia:

She gets 5 boxes, which = 5x. Then she had to go back and just get 5 tiles. So we have:

5x + 5

Number of tiles Felicia used = 5x + 5

7 0
3 years ago
The ratio of North American butterflies to South American butterflies at a butterfly park is 5:3. The ratio of South American bu
Natalija [7]

Answer: There are 12 European butterflies.

Step-by-step explanation:

Let be "s" the number of South American butterflies at the butterfly park.

Since the ratio of North American butterflies to South American butterflies at a butterfly park is 5:3 and the number of North American butterflies at the butterfly park is 30, you can write the folllowing proportion:

\frac{5}{3}=\frac{30}{s}

Solving for "s", you get:

(s)(\frac{5}{3})=30\\\\s=(30)(\frac{3}{5})\\\\s=18

Let be "e" the number of European butterflies at the butterfly park.

Knowing that the ratio of South American butterflies to European butterflies at the butterfly park is 3:2, and since there are 18 South American butterflies, you can write the following proportion:

\frac{3}{2}=\frac{18}{e}

Solving for "e", you get:

(e)(\frac{3}{2})=18\\\\e=(18)(\frac{2}{3})\\\\e=12

4 0
4 years ago
Harold, the handyman, builds two similar sheds for a farm. The smaller shed is 6 feet tall and weighs 500 pounds. If it takes th
Akimi4 [234]

Answer:

18 ft

1500 pounds

Step-by-step explanation:

6 x 3 = 1 8

500 x 3 = 1500

7 0
3 years ago
To control the traffic during Ramadan month, a Police Sergeant is assigned to control the traffic
m_a_m_a [10]

To complete the table it is necessary to know the possibilities that the sergeant has to change or remain in an intersection. The probabilities (depending on the box) are:

  • 0
  • 0.2
  • 0.25
  • 0.33

<h3>How to calculate the probability of intersection change? </h3>

To know the probability of intersection change, it is necessary to locate the police officer at one of the intersections. Subsequently, count how many possibilities of change you have, for example: 3 possibilities and finally add the possibility of remaining in the intersection as shown below:

  • Intersection 3 has 3 possibilities of changing towards intersections 2, 8 and 4. Additionally, it has the possibility of staying at intersection 3, that is, it has 4 possible decisions.

To know the probability we divide the number 1 (because it is only a decision that we have to make) and divide it by the number of possibilities (4).

  • 1 ÷ 4 = 0.25

According to the image we can infer that in some intersections they only have 3, 4 and 5 possibilities, so the probability of change will be different as shown below:

  • 1 ÷ 3 = 0.33
  • 1 ÷ 4 = 0.25
  • 1 ÷ 5 = 0.2

Learn more about probabilities in: brainly.com/question/8069952

3 0
3 years ago
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