3 years ago

A square has a perimeter of 36 ft. What is the length of each side?

Mathematics

1 answer:

Yanka [14]3 years ago

3 0

9 ft is the answer because a square has four sides, so 36 divided by 4 is 9

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liubo4ka [24]

Answer:

Step-by-step explanation:

x equals 4 when y equals 9 on that line

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2 years ago

X^3-13x^2+40x=0 quadratic

lutik1710 [3]

Answer:

x(x-5)(x-8)

x=5

x=8

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x(x^2-13x+40)
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3 years ago

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Bad White [126]

Answer:

54π

Step-by-step explanation:

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3 years ago

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Given the figure, find the values of x and z.

matrenka [14]

Answer:

$z = 62 \\ 6x + 52 = 180 - 62 \\ 6x = 66 \\ x = 11$

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2 years ago

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How do you find the length of the curve x=3t−t3x=3t-t^3, y=3t2y=3t^2, where 0≤t≤3√0<=t<=sqrt(3) ?

taurus [48]

It's simple, you just have to do this:

$L=\int\limits_{a}^{b}\sqrt{\left(\frac{dx}{dt}\right)^2+\left(\frac{dy}{dt}\right)^2}~dt$

$x=3t-t^3$

$\frac{dx}{dt}=3-3t^2$

$y=3t^2$

$\frac{dy}{dt}=6t$

replacing

$L=\int\limits_{0}^{\sqrt{3}}\sqrt{\left(3-3t^2\right)^2+\left(6t\right)^2}~dt$

$L=\int\limits_{0}^{\sqrt{3}}\sqrt{9-18t^2+9t^4+36t^2}~dt$

$L=\int\limits_{0}^{\sqrt{3}}\sqrt{9+9t^4+18t^2}~dt$

$L=\int\limits_{0}^{\sqrt{3}}\sqrt{(3t^2+3)^2}~dt$

$L=\int\limits_{0}^{\sqrt{3}}(3t^2+3)~dt$

$L=t^3+3t|_0^{\sqrt{3}}$

$\boxed{\boxed{L=3\sqrt{3}+3\sqrt{3}=6\sqrt{3}}}$

8 0

2 years ago