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saw5 [17]
3 years ago
12

5x+2y= 5 3х - у= 14 Solve

Mathematics
1 answer:
rjkz [21]3 years ago
4 0

Answer:

x = 3

y = -5

Step-by-step explanation:

5x+2y= 5    equation 1

3х - у = 14   equation 2

using equation 2 we have:

3x - 14 = y     equation 3

using equation 3 in equation 1 we have:

5x + 2(3x -14) = 5  

5x + 6x -28 = 5

11x = 5+28

11x = 33

x =33/11

x = 3

using equation 3 we have:

3(3) - 14 = y

y =9-14

y = -5

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What is the absolute value of a number
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4 0
3 years ago
The Garcia family started the day with 222 gallons of milk. They drank 111 quart of milk for breakfast and 3 pints for lunch. Ho
Elena-2011 [213]

Answer:

11 pints of milk the Garcia family have left after lunch.

Step-by-step explanation:

The Garcia family started the day with 2 gallons of milk.

They drank 1 quart of milk for breakfast and 3 pints for lunch.

Since, 1 gallon = 8 pint

2 gallon = 16 pint

and 1 quart = 2 pint

Left amount = 16 pint - ( 2pint + 3pint)

= 16-5

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6 0
2 years ago
The diagram shows an empty cylindrical container. Ana puts a solid cube of side length 8 cm into the container. She then pours 1
marshall27 [118]

Answer:

<h3><u>Cylinder</u></h3>

\textsf{Volume of a cylinder}=\sf \pi r^2 h \quad\textsf{(where r is the radius and h is the height)}

Given:

  • r = 6 cm
  • h = 18 cm

\begin{aligned}\implies \sf V &= \sf \pi (6)^2(18)\\& = \sf 648 \pi \: cm^3\end{aligned}

<h3><u>Cube</u></h3>

\textsf{Volume of a cube}=\sf x^3\quad\textsf{(where x is the side length)}

Given:

  • x = 8 cm

\begin{aligned}\implies \sf V &= 8^3\\& = \sf 512 \: cm^3\end{aligned}

<h3><u>Volume available to be filled with water</u></h3>

Volume of cylinder - volume of cube

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    1 litre = 1000 cm³

⇒ 1.5 litres = 1000 × 1.5 = 1500 cm³

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4 0
2 years ago
Cam is 3 years older than Lara, If there combined age is 63, determine their ages by solving simultaneous elmination.
dem82 [27]

Answer:

30 and 33 years

Step-by-step explanation:

Let Lara be x years

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2x=60

x=60/2

x=30

Lara=30years and Cam =30+3+33years

5 0
3 years ago
Read 2 more answers
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