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2 years ago

Solve for x 2(4x - 3)-8=4+2x Thanks!

Mathematics

2 answers:

eduard2 years ago

5 0

Answer: 3

Step-by-step explanation:

first substitute 2 into 4, so its 2*4 = 8x

Second, substitute 2 into -3 so itś 2*-3= -6

So, so far we're at 8x-6-8+4+2x, we combine the integers (which is -6 & -8, and we get -14)

So far, we are now at 8x-14=4+2x.

Now we add 14, to cancel out -14.

Then, we add 14 to 4, making 18.

Then, we subtract -2 to cancel out 2x.

Then, we subtract 2x to 8x, Making 6x

Now, final step :)

We divide 6x=18

which is 18 divided by 6

which is 3 :)

You got this, you're doing great!

Effectus [21]2 years ago

3 0

Answer:

x=3

Step-by-step explanation:

plz mark brainliest

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7 0

2 years ago

Read 2 more answers

A cell tower is located at and transmits a circular signal that covers three major cities. The three cities are located on the c

Lelu [443]

Answer:

$(x+8)^2 +(y-4)^2 = 25$

Step-by-step explanation:

Assuming this complete problem: "A cell tower is located at (-8, 4) and transmits a circular signal that covers three major cities. The three cities are located on the circle and have the following coordinates: G (-4, 7), H (-13, 4), and I (-8, -1). Find the equation of the circle"

For this case the generla equation for the circle is given by:

$(x-h)^2 +(y-k)^2 = r^2$

From the info we know that the tower is located at (-8, 4) so then h = -8 and k = 4, so then we need to find the radius. So we have the equation like this: $(x+8)^2 +(y-4)^2 = r^2$

If the 3 points are on the circle then satisfy the equation. We can use the first point (-4,7) and if we replace we can find the value for $r^2$

$(-4+8)^2 +(7-4)^2 =25= r^2$

So then $r = \sqrt{25}=5$

And if we replace the second point we got this:

$(-13+8)^2 +(4-4)^2 = 25 =r^2$

And for the third point we have:

$(-8+8)^2 +(-1-4)^2 = 25 =r^2$

And we got the same result.

So then our final equation is given:

$(x+8)^2 +(y-4)^2 = 25$

4 0

3 years ago

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