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3 years ago

12

Find x. 2x + 40 3x 4x X + 50 x= [?] I Enter

1 answer:

Oxana [17]3 years ago

6 0

Answer:

$x = 27$

Step-by-step explanation:

A shape exterior angles add up to 360.

All of these angles are exterior angles so we can add up all of them to and set it equal to 360 to find x.

$3x + 4x + 2x + 40 + x + 50$

$10x + 90 = 360$

$10x = 270$

$x = 27$

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Answer:

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An elliptical culvert is 3.5 feet tall and 6 feet wide. It is filled with water to a depth of 0.95 feet. Find the width of the s

maks197457 [2]

Answer:

$W_s \approx5.3$

Step-by-step explanation:

From the question we are told that

Height $H=3.5ft$

Weight $W= 6ft$

Depth $D=0.95ft$

Generally the equation for ellipses is given as

$\frac{x^2}{a^2} +\frac{y^2}{b^2} =1$

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$b=H/2\\b=3.5/2\\Therefore\\b=1.75\\a=W/2\\a=6/2\\Therefore\\a=3\\$

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Generally to find y in the equation $\frac{x^2}{a^2} +\frac{y^2}{b^2} =1$

$y=-b+d$

$y=-1.75+0.95$

$y=-0.8$

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$\frac{x^2}{3^2} +\frac{(0.8)^2}{1.75^2} =1$

$\frac{x^2}{3^2} =1-\frac{(0.8)^2}{1.75^2}$

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$X =\sqrt{7.119183674}$

$X =2.66817984$

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$W_s=2.66817984*2$

$W_s=5.33635968$

$W_s \approx5.3$

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3 years ago

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