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2 years ago

Plz help me with this Plzzzz!!!!

Mathematics

2 answers:

gladu [14]2 years ago

5 0

4x-2 = 2x + 2

solve for x
2x = 4
x = 2

plug this in to find the length of one side
4(2) - 2 = 6

6(3) = 18

so the perimeter is 18!

MrRissso [65]2 years ago

4 0

In pretty sure it’s D , making each side equal to 6

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Help me solve please.

Elden [556K]

Y-intercept: (0, -6)
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2 years ago

Solve the equations for all values of x by completing the square x^2+62=-16x

lorasvet [3.4K]

Answer:

$x = \sqrt{2} - 8\\x = -\sqrt{2} - 8$

Step-by-step explanation:

To complete the square, we first have to get our equation into $ax^2 + bx = c$ form.

First we add 16x to both sides:

$x^2 + 16x + 62 = 0$

And now we subtract 62 from both sides.

$x^2 + 16x = -62$

We now have to add $(\frac{b}{2})^2$ to both sides of the equation. b is 16, so this value becomes $(16\div2)^2 = 8^2 = 64$ .

$x^2 + 16x + 64 = -62+64$

We can now write the left side of the equation as a perfect square. We know that x+8 will be the solution because $8\cdot8=64$ and $8+8=16$ .

$(x+8)^2 = -62 + 64$

We can now take the square root of both sides.

$x+8 = \sqrt{-62+64}\\\\ x+8 = \pm \sqrt{2}$

We can now isolate x on one side by subtracting 8 from both sides.

$x = \pm\sqrt{2} - 8$

So our solutions are

$x = \sqrt{2} - 8\\x = -\sqrt{2} - 8$

Hope this helped!

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2 years ago

Charlotte makes crepes using 5/8 cup of milk for every 1/2 cup of flour. She wants to know the amount of milk uses per cup of fl

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Answer:1 1/4

Step-by-step explanation:

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2 years ago

Read 2 more answers

Hey guys I need some help; I would really appreciate it :)

Masja [62]

Their answer is correct so you need explanation?

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Answer: X= 68

Just took the test

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2 years ago