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2 years ago

15

fun fact im terrible at math and i need help with another question lol The length of a rectangle is 15 cm and the width is 8 cm.

What is the perimeter of the rectangle?

1 answer:

S_A_V [24]2 years ago

6 0

Answer:

the perimeter of the rectangle is 46 cm.

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Which two values of x are roots of the polynomial below?<br> 3x2-3x+1

QveST [7]

Answer:

The roots are

$x=\frac{1}{6} [3+ i\sqrt{3}]$

$x=\frac{1}{6} [3- i\sqrt{3}]$

Step-by-step explanation:

we have

$3x^2-3x+1$

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

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

in this problem we have

$3x^2-3x+1=0$

so

$a=3\\b=-3\\c=1$

substitute in the formula

$x=\frac{-(-3)\pm\sqrt{-3^{2}-4(3)(1)}} {2(3)}$

$x=\frac{3\pm\sqrt{-3}} {6}$

Remember that

$i=\sqrt{-1}$

so

$x=\frac{1}{6} [3\pm i\sqrt{3}]$

The roots are

$x=\frac{1}{6} [3+ i\sqrt{3}]$

$x=\frac{1}{6} [3- i\sqrt{3}]$

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3 years ago

2PLSS NEED HELP.........

Nonamiya [84]

Answer:

right

Step-by-step explanation:

The side ratios are ...

24 : 45 : 51 = 8 : 15 : 17

These numbers are a Pythagorean triple. The triangle is a right triangle.

__

24² + 45² = 576 +2025 = 2601 = 51² . . . . the Pythagorean theorem is satisfied

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Answer:

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Step-by-step explanation:

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