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makvit [3.9K]
3 years ago
12

Help me fast please ​

Mathematics
2 answers:
Aleks [24]3 years ago
4 0

\:  \:  \:  \:  \:  \:  \:  \:  \:  \: 4y - 2(3y - 5) \\  \\  =  >  4y- 6y + 10 \\  \\  =  >  \green{\boxed{  - 2y + 10}}

SpyIntel [72]3 years ago
3 0
4y-6y+10
10y+10
COMMENT FOR A BETTER EXPLAINATION
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Solve the system of equations algebraically. <br> 6x + 5y = -14<br> 5x + 2y = -3
Alik [6]
(1,-4)
x=1, y=-4.

Solve for the first variable in one of the equations, then substitute the result into the other equation.
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2 years ago
Graph the line that represents a proportional relationship between yyy and xxx where the unit rate of change of yyy with respect
My name is Ann [436]

Answer:

y=\frac{4}{3}x

The graph in the attached figure

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form y/x=k or y=kx

In a proportional relationship the constant of proportionality k is equal to the slope m or unit rate of the line and the line passes through the origin

so

In this problem we have

k=\frac{4}{3}

substitute

y=\frac{4}{3}x

using a graphing tool

The graph in the attached figure

3 0
3 years ago
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rodikova [14]
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3 0
3 years ago
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Grace [21]

Answer:X=-15

Step-by-step explanation:

-4x/5=12

5x-4x/5=5x12

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4 0
2 years ago
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damaskus [11]

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Answer:

  see attached

Step-by-step explanation:

Most of this exercise is looking at different ways to identify the slope of the line. The first attachment shows the corresponding "run" (horizontal change)  and "rise" (vertical change) between the marked points.

In your diagram, these values (run=1, rise=-3) are filled in 3 places. At the top, the changes are described in words. On the left, they are described as "rise" and "run" with numbers. At the bottom left, these same numbers are described by ∆y and ∆x.

The calculation at the right shows the differences between y (numerator) and x (denominator) coordinates. This is how you compute the slope from the coordinates of two points.

If you draw a line through the two points, you find it intersects the y-axis at y=4. This is the y-intercept that gets filled in at the bottom. (The y-intercept here is 1 left and 3 up from the point (1, 1).)

4 0
3 years ago
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