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solmaris [256]
2 years ago
9

PLEASE HELP 30 POINTS AND BRAINLY

Mathematics
1 answer:
Umnica [9.8K]2 years ago
8 0

Answer:

I think the option B suits the most

Step-by-step explanation:

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consider a wire 2 ft long cut into two pieces. one piece forms a circle with radius r and the other forms a square with side len
makkiz [27]

The formula for the radius r in terms of x . and for the maximum areas is x=2/\pi+4

Given that,

y forms a circle of radius r

y=2\pir

r=y/2\pi

(2-y)- forms Square Side x

(2-y) = 4x

x=(2-y)/4

Now Sum of Area's=Area of Square +Area of Circle

Sum = \pir² + x²

Substitute the r and x values in above equation,

A(y)= y²/4\pi+(y-2)²/ 16

To maximize Area A(y)

A'(y)= 0

2y/4\pi + 2(y-2)/16 =0

y/2\pi + (y-2)/8 =0

y = 2\pi/\pi+4

Y max will be max, x to be maximum.

for maximum sum of areas,

x=2/\pi+4

Hence,The formula for the radius r in terms of x . and for the maximum areas is x=2/\pi+4

Learn more about Area :

brainly.com/question/28642423

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4 0
1 year ago
Don't really understand how to solve please help <3​
valina [46]
This is how the first one would be done. sorry if it’s a little messy the answer is 9. but try using photomath for the rest. it gives you the answer and explains how to do it

8 0
3 years ago
Factor the trinomial
wel
6a³-18a²-1620a
Collect 6a:
6a(a²-3a-270)
6a(a-18)(a+15)
3 0
3 years ago
What is 5.9 and 1 in standard form...? >_
Blababa [14]
The answer would be 59
3 0
2 years ago
What is the solution set of the quadratic equation 8x2 +2x +1 =0?
Sidana [21]
   
\displaystyle\\
 8x^2 +2x +1 =0\\\\
x_{12}=\frac{-b\pm \sqrt{b^2-4ac}}{2a}=\frac{-2\pm \sqrt{2^2-4\cdot 8 \cdot 1}}{2\cdot 8}=\\\\
=\frac{-2\pm \sqrt{4-32}}{16}=\frac{-2\pm \sqrt{-28}}{16}=\frac{-2\pm \sqrt{4\cdot 7\cdot(-1)}}{16}=\\\\
=\frac{-2\pm 2i\sqrt{7}}{16}=\frac{-1\pm i\sqrt{7}}{8}= -\frac{1}{8}\pm  \frac{\sqrt{7}}{8}i\\\\
x_1 =   \boxed{-\frac{1}{8}+  \frac{\sqrt{7}}{8}i}\\\\
x_2 =   \boxed{-\frac{1}{8}-  \frac{\sqrt{7}}{8}i}\\\\
x_1,~x_2~\in \mathbb{C}



4 0
3 years ago
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