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2 years ago

A circle is divided into 20 equal parts. what is the angle measure of three of those parts?

Mathematics

1 answer:

stich3 [128]2 years ago

7 0

54 degrees !!!!!! will be the answer

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A rectangular plot of farmland will be bounded on one side by a river and on the other three sides by a single-strand electric f

likoan [24]

Step-by-step explanation:

Let x be the length and y be the width of the rectangular plot.

The plot is bounded on one side by a river and on the other three sides by a single-strand electric fence. It means,

x+2y = 1500

x = 1500 - 2y ....(1)

We know that the area of a rectangular plot is given by :

A = xy ....(2)

Put the value of x from equation (1) in (2)

$A=(1500-2y)y\\\\A=1500y-2y^2$ .....(3)

For largest area, differentiate above area equation wrt y.

$\dfrac{dA}{dy}=\dfrac{d}{dy}(1500y-2y^2)\\\\=1500-4y\\\\\text{Put}\ \dfrac{dA}{dy}=0\\\\1500-4y=0\\\\y=\dfrac{1500}{4}\\\\=375$

Put the value of y in equation (1).

x = 1500-2(375)

= 750 m

Put the value of y in equation (3).

$A =1500(375)-2(375)^2\\A=281250\ m^2$

Hence, the largest area is 281250 m² and its dimensions are 750 m and 375 m.

3 0

3 years ago

11(2x + 1) = 4x - 7 show work

Harlamova29_29 [7]

Answer:

0.22

Step-by-step explanation:

22x + 11 = 4x - 7

22x - 4x = -7 + 11

18x = 4

x = 4/18

x = 0.22

Please mark as brainliest.

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3 years ago

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A line passes through (2, −1)(2, −1) and (4, 5)(4, 5).

olga2289 [7]

Use a Texas instrumental calculator and put all those points into stat edit and then put 4

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3 years ago

In the town of Pleasantville, a poll of 340 residents revealed that 289 residents were opposed to the proposed changes to the to

trapecia [35]

Step-by-step explanation:

sorry I don't know the answer

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2 years ago

She once sang in the choir, and wore pretty clothing. Did I use the comma right ?

kolezko [41]

I think there is no need to have a comma in this sentence

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3 years ago

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