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Julli [10]
3 years ago
13

A house painter used the equation y = 6.2x to determine the number of gallons of paint, y, needed to paint a number of houses, x

. Which table represents the equation?

Mathematics
1 answer:
lesya [120]3 years ago
5 0

Answer:

(2,12.4)  , (5,31),  (8,49.6)

Step-by-step explanation:

To Solve this problem, let substitute value  of x from given table into equation y = 6.2x and determine value of y .

For x = 2

y = 6.2x

=> y = 6.2*2 = 12.4

__________________________________________

For x = 5

y = 6.2*5

=> y = 31

__________________________________________

For x = 8

y = 6.2*8

=> y = 49.6

__________________________________________

Thus, second table represent the equation.

(2,12.4)  , (5,31),  (8,49.6)

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irga5000 [103]

Answer:

The number is 12.

Step-by-step explanation:

Given: 6-\dfrac{3}{4}x+\dfrac{1}{3}=\dfrac{1}{2}x+5

We need to find a number multiply to each term to get rid of fraction.

We will find LCD of denominator.

First we see the numbers at denominator

Denominators are 4,3,2

Now, we will find the LCD of 2,3, and 4

Factor of 2: 2x1

Factor of 3: 3x1

Factor of 4: 2x2x1

LCD = 2x2x3 = 12

If we multiply by 12 to each term to eliminate the fraction.

Simplest equation:

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4 years ago
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Answer:

Answers provided below

Step-by-step explanation:

From the simultaneous linear equation, we have the coefficient matrix as;

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Similarly, the y-matrix Dy is given by;

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Also,the z-matrix Dz is given by;

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Determinant of the coefficient matrix from online determinant calculator is;

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Determinant of the x-matrix from online determinant calculator is; Dx = 92

Determinant of the y-matrix from online determinant calculator is; Dy = 696

Determinant of the z-matrix from online determinant calculator is; Dz = 576

From crammers rule;

x = Dx/D = 92/136

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Answer:

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