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3 years ago

13

What is the area of this figure? I give brainliest :)

1 answer:

joja [24]3 years ago

8 0

Answer:

$217 \: {mi}^{2}$

Step-by-step explanation:

Area of the figure

$= 13*7 + 21 * 6 \\ = 91 +12 6 \\ = 217 \: {mi}^{2}$

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How do you write 1/12 as a decimal?

meriva

Answer:

I think it's 0.083

Step-by-step explanation:

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Jocelyn wants to buy a pair of Jordan's that usually cost $160. The store is having a sale and all merchandise is discounted by

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3 years ago

Find a homogeneous linear differential equation with constant coefficients whose general solution is given by

frez [133]

Answer:

$y" + 2y' + 2y = 0$

Step-by-step explanation:

Given

$y=c_1e^{-x}cosx+c_2e^{-x}sinx$

Required

Determine a homogeneous linear differential equation

Rewrite the expression as:

$y=c_1e^{\alpha x}cos(\beta x)+c_2e^{\alpha x}sin(\beta x)$

Where

$\alpha = -1$ and $\beta = 1$

For a homogeneous linear differential equation, the repeated value m is given as:

$m = \alpha \± \beta i$

Substitute values for $\alpha$ and $\beta$

$m = -1 \± 1*i$

$m = -1 \± i$

Add 1 to both sides

$m +1= 1 -1 \± i$

$m +1= \± i$

Square both sides

$(m +1)^2= (\± i)^2$

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In complex numbers:

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So, the expression becomes:

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Add 1 to both sides

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3 years ago

What is <br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B2ax%20%2B%203%7D%7Bax%20%2B%203%7D%20%20%3D%20%20-%201" id="TexFormul

Anvisha [2.4K]

$\dfrac{2ax+3}{ax+3}=-1$

Rewrite -1 as a fraction

$\dfrac{2ax+3}{ax+3}=\dfrac{-1}{1}$

Cross multiply

$2ax+3=-1(ax+3)$

Distribute the -1

$2ax+3=-ax-3$

Add both sides by ax

$3ax+3=-3$

Subtract both sides by 3

$3ax=-6$

Divide both sides by 3a

$x=-\dfrac{6}{3a}$

Simplify

$=-\dfrac{2}{a}$

That's the value of x respect to a. Let me know if you need any clarifications, thanks!

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4 years ago

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How do you find the missing variables in this problem please help

andrew-mc [135]

Answer:

x = 55, y = 70, z = 125

Step-by-step explanation:

125 and x are adjacent angles and are supplementary, then

x = 180 - 125 = 55

The triangle is isosceles ( 2 congruent sides ) thus the base angles are congruent, both 55

The sum of the 3 angles in the triangle = 180° , thus

y = 180 - (55 + 55) = 180 - 110 = 70

55 and z are adjacent and supplementary, so

z = 180 - 55 = 125

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3 years ago

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