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3 years ago

HELPPPP really quick

Mathematics

1 answer:

Reika [66]3 years ago

4 0

Answer:

y= 4 - 2/3 x, x= x

Step-by-step explanation: Substitute y=4 -2/3x [2x=12-3 (4-2/3x)]

Simplify: [2x=2x]

For y = 4- 2/3x

Expressing y in terms of x: y= 4 -2/3x

So the solutions to the system of Equations are: y = 4 - 2/3 x, x = x

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If z is directly proprotional to x and z = 12 when x = 3, find the value of x when z = 18

elixir [45]

Answer:

Step-by-step explanation:

z is directly proportional to x

z = kx, where k is coefficient

If z = 12 when x = 3

Then we have

12 = 3k
k = 4

So the coefficient is 4

When z = 18, we have

18 = 4x
x = 18/4
x = 4.5

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4 years ago

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sergij07 [2.7K]

Answer:

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3 years ago

Share £40 in the ratio 1:4 between Tim and Sam

lesantik [10]

Answer:

$\£8:\£32$

Step-by-step explanation:

$\frac{40}{1+4}$

$\frac{40}{5}$

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$1 \times 8:4 \times 8$

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3 years ago

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Kruka [31]

Answer:

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Step-by-step explanation:

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3 years ago

Calcule a área da região sombreada da figura abaixo. 120° 4 cm B

masya89 [10]

Answer:

Area of segment = 9.8 cm² (Approx.)

Step-by-step explanation:

Given:

Angle θ = 120°

Radius of circle = 4 cm

Find:

Area of segment

Computation:

Area of segment = [θ/360][π][r]² - [1/2][r²][sinθ]

Area of segment = [120/360][3.14][4]² - [1/2][4²][sin120]

Area of segment = [0.333][3.14][16] - [0.5][16][0.866]

Area of segment = 16.7299 - 6.28

Area of segment = 9.8019

Area of segment = 9.8 cm² (Approx.)

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3 years ago