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Natalija [7]
3 years ago
12

What postulate is illustrated by the diagram above?

Mathematics
1 answer:
PIT_PIT [208]3 years ago
8 0
There is no diagram so i can not possibly help you on this without it
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BRAINLIEST GUARANTEED, 20 points!!
N76 [4]

Answer:

x = -4, y = -4

Step-by-step explanation:

Normally, if it's allowed, I would use a graphing calculator which basically turns the equations (-2x+y=4) and (y=\frac{1}{2}x-2) into two straight lines, which represent the line of possible values that can fit into the equations. However, since you want the value of x and y in both equations to be the same, you have to look for the intersection of the two graphs. I use desmos.com/calculator to just type in the equations and the lines would be drawn automatically. By hovering over the equation, I can get the two values of x and y (the first value is for x, and the second one is for y).

Here is the working if you want to work it out by hand: (I'm using algebra for this one)

-2x+y=4 -------------------------------- Equation 1

y=\frac{1}{2}x-2 ---------------------------------- Equation 2

Substitute Equation 2 into Equation 1:

-2x+\frac{1}{2}x-2=4

Simplify:

-1\frac{1}{2}x-2=4

-1\frac{1}{2}x=4+2

-1\frac{1}{2}x=6

1\frac{1}{2}x=-6

\frac{3}{2}x=-6

3x=-6×2

3x=-12

x=-12÷3

x=-4 ------------------------------------ Equation 3

Substitute Equation 3 into Equation 1:

-2(-4)+y=4

Simplify:

8+y=4

y=4-8

y=-4

Thus, x=-4, y=-4

8 0
3 years ago
1. Evaluate 5+8x when x = 2<br> 2. y+51=98<br> 3. m6=9 <br> 4.1 5n+45?<br><br> I need some help!
BaLLatris [955]
1 is 21
2 is 47
i'm not sure what 3 is but i think it's 1.5 or 3/2
4 is 5(n+9)
6 0
3 years ago
The first two terms of an exponential sequence are 18 and 6. What are the next three terms?
sweet [91]

Answer:

The next three terms are 54, 162, 486

Step-by-step explanation:

Exponential sequences you multiply to find the next term

6 x 3 = 18 (to find the next term you can multiply the previous term by 3)

18 x 3 = 54

54 x 3 = 162

162 x 3 = 486

7 0
3 years ago
What is the length of a ramp whose rise is 10 feet and slope is 5/12
polet [3.4K]

Answer:

120 feet

Step-by-step explanation:

Length/height =second number in ratio (here's it is 12)

L/10=12

Therefore length will be 120

3 0
4 years ago
A total of 428 tickets were sold for the school play. They were either adult tickets or student tickets. The number of student t
aalyn [17]
321 adult tickets were sold use the formula to solve
108 student tickets were sold 
6 0
3 years ago
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