3 years ago

2) A square and a rectangle have the same perimeter. The square has a side length of 6 x units. The

Mathematics

1 answer:

Romashka-Z-Leto [24]3 years ago

3 0

Answer:

The value of X should be 8

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<img src="https://tex.z-dn.net/?f=%5Cfrac%20%7B%2018%20%5E%20%7B%20n%20%2B%201%20%7D%20%5Ctimes%203%20%5E%20%7B%201%20-%20n%20%7

Rufina [12.5K]

Answer:

$4 \times {3}^{n + 3}$

Step-by-step explanation:

$\frac{ {18}^{n + 1} \times {3}^{1 - n}}{ {2}^{n - 1} }$

$\frac{ {3}^{2n + 2} \times {2}^{n + 1} \times {3}^{1 - n} }{ {2}^{n - 1} }$

${3}^{2n + 2} \times {2}^{2} \times {3}^{1 - n}$

${3}^{2n + 2} \times 4 \times {3}^{1 - n}$

$= 4 \times {3}^{n + 3}$

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3 years ago

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Nesterboy [21]

Answer: 21

Step-by-step explanation:

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2 years ago

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Sin^22x - 2cos2x + 2=0

zhuklara [117]

Answer:

x=πn, n∈Z

Step-by-step explanation:

if sin²2x=1-cos²2x, then

1-cos²2x-2cos2x+2=0; ⇒ cos²2x+2cos2x-3=0; ⇔ (cos2x+3)(cos2x-1)=0;

$\left[\begin{array}{cc}cos2x+3=0\\cos2x-1=0\\\end{array} \ \ \left[\begin{array}{cc}x \ 'does-not-exist'\\cos2x=1\\\end{array} \ \ 2x=2\pi n, n=Z \ x=\pi n, n=Z$

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2 years ago

Divide 2x4- 4x3 - 11x2 + 3x - 6 by x + 2.

babunello [35]

Answer:

Step-by-step explanation:

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Find the nth term of this quadratic sequence<br> 3, 8, 15, 24, 35, ...

SpyIntel [72]

Answer:

$s_n = (n+1)^2-1$

Step-by-step explanation:

This assumes that the first item coincides with n=1.

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3 years ago