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nalin [4]
3 years ago
11

Which expression is equivalent to 2(3−4)−(8+3)?

Mathematics
2 answers:
horrorfan [7]3 years ago
7 0

Answer:

-13

Step-by-step explanation:

2(3-4)-(8+3)

2(-1)-(11)

-2-(11)

=-13

Korvikt [17]3 years ago
3 0

Answer:20

Step-by-step explanation:

2(3-4)-(8+3)                                                                                                                                  

2(1)-(11)

2-22

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−5y+8x=−18<br> 5y+2x=58 <br> Solve the system of equations.<br> ​
kvasek [131]

Answer:

1:   −5y+8x=−18  

Slope = 3.200/2.000 = 1.600

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2:   Slope = -0.800/2.000 = -0.400

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Step-by-step explanation:

1: Step  1  :

Equation of a Straight Line

1.1     Solve   -5y+8x+18  = 0

Tiger recognizes that we have here an equation of a straight line. Such an equation is usually written y=mx+b ("y=mx+c" in the UK).

"y=mx+b" is the formula of a straight line drawn on Cartesian coordinate system in which "y" is the vertical axis and "x" the horizontal axis.

In this formula :

y tells us how far up the line goes

x tells us how far along

m is the Slope or Gradient i.e. how steep the line is

b is the Y-intercept i.e. where the line crosses the Y axis

The X and Y intercepts and the Slope are called the line properties. We shall now graph the line  -5y+8x+18  = 0 and calculate its properties

Graph of a Straight Line :

 

 

Calculate the Y-Intercept :

Notice that when x = 0 the value of y is 18/5 so this line "cuts" the y axis at y= 3.60000

 y-intercept = 18/5  =  3.60000  

Calculate the X-Intercept :

When y = 0 the value of x is -9/4 Our line therefore "cuts" the x axis at x=-2.25000

 x-intercept = -18/8 = -9/4  = -2.25000  

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2: Same thing

8 0
3 years ago
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