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3 years ago

Solving the system of linear equations by graphing

Mathematics

1 answer:

RideAnS [48]3 years ago

6 0

A) y = 2x -4
B) x + 2y = 12

A) -2x + y = -4 then multiplying Equation B by 2
B) 2x + 4y = 24

Adding the equations
5y = 20
y = 4
x = 4
Okay, that was solved by elimination.
If these equations were graphed, they would be two lines that would meet at the point (4, 4)

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Oque sao paralelepipedos

Blababa [14]

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4 years ago

what is the area of a parallelogram if the coordinates of its vertices are (0,-2) (3,2) (8,2) and (5,-2)?

amm1812

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3 years ago

What is the solution to this equation? 3[x] - 1 = 8

Yanka [14]

Answer:

Step-by-step explanation:

The whole goal is to isolate the variable.

3x-1=8

1+3x-1=8+1 first add 1 to both sides of the equation to cancel out the -1

3x=9 now just divide 3 to both sides of the equation because the opposite of multiplication is division. So dividing 3 on both sides cancels out the 3 to isolate the x

3x/3=9/3

x=3

8 0

3 years ago

On a treasure map, a X is placed at point (9, -7). if the pirates are currently on point (9,3), how many units away are they?

Alex_Xolod [135]

Answer:

They are 10 units away from the treasure

Step-by-step explanation:

Notice that the points (9, -7) and (9, 3) are both located at the same x-value (9) while their y-values are in one case 3 units above the x-axis, and in the other 7 units BELOW the x-axis. Therefore thy differ by 3 - (-7) units , which totals 10 units.

8 0

3 years ago

Read 2 more answers

Solve. 2a + 4 > 12 {ala > 2} {ala > 4} {ala > 8} {ala > 10}

Softa [21]

Answer:

b) a > 4

Step-by-step explanation:

Step(i):-

Given inequality equation

2 a + 4 > 12

subtracting ' 4' on both sides , we get

2 a + 4 -4 > 12 -4

2 a > 8

Step(ii):-

dividing '2' on both sides , we get

$\frac{2a}{2} > \frac{8}{4}$

a > 4

6 0

3 years ago

Read 2 more answers