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3 years ago

The substitution method: Solve for x in the second equation and substitute it into the first equation. The result is .

Mathematics

2 answers:

Dvinal [7]3 years ago

7 0

Answer: solve for c in a second equation and substitute: correct is 2(-3+2y) +5y= -6. 100% correct.

Step-by-step explanation:

jek_recluse [69]3 years ago

5 0

Suppose you have the following system of linear equation:

$\left \{ {{(1) \ ax+by=c} \atop {(2) \ dx+ey=f}} \right.$

According to the statement above, first we need to solve for x in the second equation:

$dx+ey=f \\ \\ \therefore x=\frac{f-ey}{d}$

Next we need to substitute x into the first equation, so:

$a\left(\frac{f-ey}{d}\right)+by=c$

So, the conclusion is that from this last equation the result we can get is y. Then, by substituting the value of y in the first or second equation we can get x.

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X2 + 5x - 36

Hunter-Best [27]

What multiplied by (x-4) would make x2+5x-36

5 0

2 years ago

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In the circle below, suppose m VUX = 152° and mZUVW = 77º. Find the following.

bezimeni [28]

Given:

In the circle, $m(\overarc{VUX})=152^\circ$ and $m(\angle MUV)=77^\circ$ .

To find:

The following measures:

(a) $m\angle VUX$

(b) $m\angle UXW$

Solution:

According to the central angle theorem, the central angle is always twice of the subtended angle intercepted on the same same arc.

$m(VUX)=2\times m\angle VWX$

$152^\circ=2\times m\angle VWX$

$\dfrac{152^\circ}{2}=m\angle VWX$

$76^\circ=m\angle VWX$

In a cyclic quadrilateral, the opposite angles are supplementary angles.

UVWX is a cyclic quadrilateral. So,

$m\angle VUX+m\angle VWX=180^\circ$ [Opposite angles of a cyclic quadrilateral]

$m\angle VUX+76^\circ=180^\circ$

$m\angle VUX=180^\circ-76^\circ$

$m\angle VUX=104^\circ$

Now,

$m\angle UXW+m\angle UVW=180^\circ$ [Opposite angles of a cyclic quadrilateral]

$m\angle UXW+77^\circ =180^\circ$

$m\angle UXW=180^\circ-77^\circ$

$m\angle UXW=103^\circ$

Therefore, $m\angle VUX=104^\circ$ and $m\angle UXW=103^\circ$ .

7 0

2 years ago

Solve.

Y_Kistochka [10]

Your answer is 7/8 bc 3+4=7

4 0

2 years ago

11. Find the Percent of Change (Round to the nearest tenth if necessary)

Elanso [62]

Answer:

A. 5.2% Decrease

Step-by-step explanation:

6 0

2 years ago

Their sum is 6 and their difference is 36<br> Help plz

Ivan

Answer:

Step-by-step explanation:

if you can use negative numbers then you could use 21 and -15

adding them together is 21 + (-15) = 6

and then subtracting 21 - (-15) =

21 + 15 = 36

do you think that would work ? :/

3 0

2 years ago

Read 2 more answers