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vivado [14]
3 years ago
12

Solve the system X plus 3Y equals 5X plus 4Y equals six

Mathematics
1 answer:
Art [367]3 years ago
3 0

Answer:

x+3y = 6

or, x = 6-3y.................(1)

3x+5y =6..........(2)

Substituting x = 6-3y in equation (2),

3 (6 - 3 y)+5 y =6

or, 18 - 9y +5y=6

or, y = 3

x = 6 - 3y = 6- 3.-3 = -3

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Two pages I need help on :)
aleksandr82 [10.1K]

Answer:

Sorry for the wait...here's the solutions!

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3 0
2 years ago
The number of charter schools is 4 less than twice the number of alternative schools and there are 48 charter schools how many a
jarptica [38.1K]
Let x = the number of alternative schools.

Therefore, 2x - 4 = 48.
                  2x -4 +4 = 48 + 4
                  2x = 52
                    x = 26

Therefore, there are 26 alternative schools(You could check this answer by substituting x=26 into the equation above.).
7 0
3 years ago
The figure shows the dimensions of a wall having a door and window of a room. Write an algebraic expression for the area of the
qwelly [4]

Answer:

Area of the wall to be painted = (11x² + 12x) square units

Step-by-step explanation:

The figure that should be attached to this question is missing. The figure was obtained and is attached to this solution provided.

From the image attached, it is given that the dimension of the rectangular wall to be painted is (4x+3) by (4x), the dimensions of the window is (2x) by (x) and the dimensions of the door is (x) by (3x).

Since, the window space and the door space cannot be painted along with the wall, the Area of the rectangular wall that will be painted will be given by the expression

(Total Area of the rectangular wall) - [(Area of window space) + (Area of door space)]

Area of a rectangular figure = Length × Breadth

Total area of rectangular wall = (4x+3) × 4x = (16x² + 12x) square units

Area of window space = (2x) × (x) = (2x²) square units

Area of door space = (x) × (3x) = (3x²) square units

Area of the wall to be painted = (16x² + 12x) - (2x² + 3x²)

= 16x² + 12x - 5x²

= (11x² + 12x) square units

Hope this Helps!!!

6 0
3 years ago
Need help with this :(
emmainna [20.7K]

Answer:

B.    m = \frac{3}{2}, y-int = 3

Step-by-step explanation:

To find the slope of the line, we need to plot two points

(2, 6) (-2, 0)

m = slope

Then use the Slope-Formula to Solve for the slope

m = \frac{y2-y1}{x2-x1}        

m = \frac{0-6}{-2-2}

m = \frac{-6}{-4}

m = \frac{6}{4}

m = \frac{3}{2}

The Slope is \frac{3}{2}

The y-intercept is 3 because the line is going 3 units upwards on y axis!

Equation: y = 3/2x + 3

Slope: 3/2

y-intercept: 3

5 0
2 years ago
Read 2 more answers
What is the volume of the rectangular prism below? *
horsena [70]

Answer:

Step-by-step explanation:

184 in *2

6 0
3 years ago
Read 2 more answers
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