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3 years ago

5

HELPP!! Find the solution of the system of equations shown on the graph

1 answer:

ss7ja [257]3 years ago

4 0

Answer:

What system of equations?????????

Step-by-step explanation:

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Question is in the picture

ANTONII [103]

Answer:

She forgot to flip the inequality sign when dividing both sides by -4

8 0

3 years ago

Read 2 more answers

Find the equation of the line that passes through the point of intersection of x + 2y = 9 and 4x -2y = -4 and the point of inter

Rudik [331]

Answer:

$y=-6x+10$

Step-by-step explanation:

The point of intersection of

$x+2y=9...eqn1$

and

$4x-2y=-4...eqn2$

is the solution of the two equations.

We add equation (1) and equation(2) to get,

$x+4x+2y-2y=9+-4$

$\Rightarrow 5x=5$

$\Rightarrow x=1$

We put $x=1$ into equation (1) to get,

$1+2y=9$

$\Rightarrow 2y=9-1$

$\Rightarrow 2y=8$

$\Rightarrow y=4$

Therefore the line passes through the point, $(1,4)$ .

The line also passes through the point of intersection of

$3x-4y=14...eqn(3)$

and

$3x+7y=-8...eqn(4)$

We subtract equation (3) from equation (4) to obtain,

$3x-3x+7y--4y=-8-14$

$\Rightarrow 11y=-22$

$\Rightarrow y=-2$

We substitute this value into equation (4) to get,

$3x+7(-2)=-8$

$3x-14=-8$

$3x=-8+14$

$3x=6$

$x=2$

The line also passes through

$(2,-2)$

The slope of the line is

$slope=\frac{4--2}{1-2} =\frac{6}{-1}=-6$

The equation of the line is

$y+2=-6(x-2)$

$y+2=-6x+12$

$y=-6x+10$ is the required equation

4 0

4 years ago

To find the value of r, Stephen rewrites 3r - 18 = 27 as 3(r - 6) = 3(9). How could this help Stephen reason the value of r? Exp

Leokris [45]

Answer: See explanation

Step-by-step explanation:

We are informed that Stephen rewrites 3r - 18 = 27 as 3(r - 6) = 3(9). This is quite thoughtful of Stephen and it's an easier way to solve the question.

In this case, 3 is a common factor to 3r, 18 and 27. Therefore, we will then have: 3(r - 6) = 3(9).

Since 3 is a common base to both, we are more concerned with the values inside the brackets. This will be:

r-6 = 9

r = 9 + 6

r = 15

Check: 3r - 18

3(15) - 18 = 45 - 18 = 27

3 0

3 years ago

Simplify 9 (-2)�� 1 3 17

kaheart [24]

What exactly are you asking because on my end I see "dark questions marks after (-2) and before 1 ??

6 0

3 years ago

at time t, the position of a body moving along the s-axis is s=t^3 - 12t^2 + 36t m. Find the total distance traveled by the body

NNADVOKAT [17]

Answer:

27 m

Step-by-step explanation:

The position of a body is given by :

$s=t^3 - 12t^2 + 36t$

We need to find the total distance traveled by the body from t=0 to t=3.

At t = 0,

$s=0^3 - 12(0)^2 + 36(0)=0\ m$

At t = 3 s,

$s=(3)^3 - 12(3)^2 + 36(3)\\\\=27\ m$

So, the total distance from t=0 to t=3 is equal to 27 m.

6 0

3 years ago