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3 years ago

What is the perimeter

Mathematics

1 answer:

Oksi-84 [34.3K]3 years ago

3 0

Answer:

The perimeter of a shape is the total distance around its edge. To calculate the perimeter of a shape, you just have to add up the lengths of all of its sides.

Step-by-step explanation:

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Solve it in rational numbers answer fast <br>

hoa [83]

142/65 or in decimal form : 2.18461538… hope this helps!!!

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3 years ago

Solve for x in the equation 2 x squared + 3 x minus 7 = x squared + 5 x + 39.

Nastasia [14]

Answer:

$\implies x=1\pm \sqrt{47}$

Step-by-step explanation:

We want to solve for x in $2x^2+3x-7=x^2+5x+39$

You need to group and combine like terms and write in standard form:

$2x^2-x^2+3x-5x-7-39=0$

$\imples x^2-2x-46=0$

By comparing to $ax^2+bx+c=0$ , we a=1,b=-2 and c=-46

The solution can be obtained using the quadratic formula.

$x=\frac{-b\pm \sqrt{b^2-4ac} }{2a}$

We substitute the coefficients to get:

$x=\frac{--2\pm \sqrt{(-2)^2-4*1*-46} }{2*1}$

$x=\frac{2\pm \sqrt{4+4*46} }{2}$

$x=\frac{2\pm \sqrt{4*47} }{2}$

$x=\frac{2\pm2\sqrt{47} }{2}$

$\implies x=1\pm \sqrt{47}$

The last choice is correct

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3 years ago

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There are 24 pages in each book. I wrote the equation 48x=1152 and solved for x in order to find the number of pages per book, which is what x equals

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4 years ago

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How to factor completely x2-10x+21

HACTEHA [7]

X2-10x+21
=(x-3)(x-7)
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3 years ago

How many solutions can be found for the equation 5x + 3(x − 1) = 10x − 2x − 3? None

salantis [7]

Simplify:
3(x - 1) = 8x -3
Expand:
3x - 3 = 8x - 3
Cancel -3:
3x = 8x
Move all terms to one side:
3x - 8x = 0
Simplify 3x - 8 to -5x
-5x = 0
Divide both sides by -5:
x = 0

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4 years ago

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