a norman window has the shape of a rectangle surmounted by a semicircle. if the perimeter of the window is 25 feet, express the area of the window as a function of the width (across the base) of the window.

Answers

Answer 1

The area of the window is [tex]\frac{25x}{2} -(1 +\frac{\pi}{2} )\frac{x^2}{2}[/tex]

The shape of the Norman window is described as a rectangle surmounted by a semicircle.

Let 'x' be the width of the window.

Then this width corresponds to the diameter of the semicircle.

That is, radius of the semicircle = x/2

Now given the perimeter of the whole window = 25 ft

This perimeter is equal to the sum of 3 sides of the rectangle and the perimeter of the semicircle.

Perimeter of the semicircle = [tex]\frac{2\pi r}{2} = \frac{\pi x}{2}[/tex] , where r is the radius of the semicircle.

Now let 'y' be the length of the window.

Then sum of three sides of the window = 2y + x

So 2y + x + [tex]\frac{\pi x}{2}[/tex] = 25

Therefore, [tex]y =( 25 - x - \frac{\pi x}{2} ) / 2[/tex]

Area of the window = Area of the semicircle + Area of the rectangle =

 [tex]\frac{\pi x^2}{8} +xy = \frac{\pi x^2}{8} + x( 25 - x - \frac{\pi x}{2} ) / 2\\ = \frac{\pi x^2}{8} + (25x - x^2 - \frac{\pi x^2}{2} ) / 2[/tex]

 So Area of the window = [tex]\frac{25x}{2} -(1 +\frac{\pi}{2} )\frac{x^2}{2}[/tex]

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Related Questions

Choose the best description for the real number 34 over 3

Answers

We need to know aut rational numbers to solve this problem. The correct answer is C, rational because it is a fraction.

Rational numbers are numbers that can be written as p/q where q is not equal to zero. In this question 34 over 3 can be written as a fraction, 34/3 where 3 is not equal to zero, so we can safely say that 34 over 3 is a rational number. Now for the reasoning part,

34/33= 11.333...

So we can see that the fraction 34/3 is a repeating decimal and not a terminating decimal. Repeating decimal is a decimal where the numbers after the decimal point keep repeating without an ending. Terminating decimal is a decimal in which the decimal terminates at one point. We can see that in this question 34/3 is not a terminating decimal.

Therefore we see that the best description for 34 over 3 is that it is a rational because it is a fraction.So option C is the correct answer.

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Your question was incomplete. Please refer below for the full content.

The question has 4 options that describe 34 over 3, which are:

A Irrational, because it is a fraction

B Irrational, because it is a repeating decimal

C Rational, because it is a fraction

D Rational, because it is a terminating decimal

in the diagram, AB is parallel to DE. Also, DE is drawn such that the length of DE is half the length of AB. If sin A=0.5, then what is sin E?​

Answers

Answer:

I got sin E = 0.5

Thus answer choice C being the correct choice

Hope this helps ;)

Step-by-step explanation:

For given diagram, sin(E) = 0.5

What is transversal?

"It is a line that passes through two lines in the same plane at two distinct points."

What are parallel lines?

"These are the lines in the plane that are at equal distance from each other and never meet."

For given question,

AB is parallel to DE.

We can observe that, the line segment AE is transversal.

So, ∠DEF and ∠FAB are alternate interior angles.

We know, when a transversal intersects two parallel lines, then each pair of alternate interior angles is equal.

⇒ ∠FAB = ∠DEF

⇒ ∠A = ∠E

⇒ sin(A) = sin(E)

As, sin(A) = 0.5

⇒ sin(E) = 0.5

Therefore, sin(E) = 0.5

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The high temperature on Monday in Alaska was -2 degrees. Tuesday's high temperature was 3 degrees lower than Monday's. What was Tuesday's high temperature?

A) 5 degrees
B) -5 degrees
C) 1 degree
D) 1 degree below zero

Answers

Answer:

The answer is B) -5

Step-by-step explanation:

It is -5 because if you take monday's temperature and subtract it by tuesday's temperature. You get -5

-2-3=-5

What is the solution to the system of equations?
x + y = 4
y = 1
O (-1-3)
0 (3.1)
(1,3)
0 (-3,-1)

Answers

Plug in 1 for y
x + 1 = 4, x = 3
You know that y = 1
Solution: (3, 1)

Graphing a Linear Equation
Try it
Which graph represents the equation y = x - 3?
42
2
4
1
4

Answers

Answer:

The third one

Step-by-step explanation:

FREE FOR-ALLHAVE FUN

Answers

Answer:

ThThaThanThanks

Step-by-step explanation:

Answer:

YAY FREE FOR ALL *starts headbanging*

Step-by-step explanation:

lol have a blessed day

a + b = 10
a - b =2
solve the systems of equations

Answers

Answer:

a=6, b=4.

Step-by-step explanation:

6+4=10, and 6-4=2.

Answer:

See below

Step-by-step explanation:

a+b =10

a-b = 2    add the two equations

2a = 12     then a = 6      a+b=10 so b = 4

Can you help me find the are of the rectangle ?

Answers

Just multiple 8 x2 Nd it’s 16

Evaluate 3 m + n 2 8 when m = –6 and n = 12.

Answers

Answer:Answer is 318

Step-by-step explanation:3 times -6 is -18

                                             28 times 12 is 336

                                             -18 + 336 is 318

             So therefore the answer would be 318.

Please help me please

Answers

Answer:

The coordinates of point F would be: (x, y) = (8.2, 5.7)

Step-by-step explanation:

We know that the location of a point P on a coordinate plane can be determined by checking the value of the x-coordinate and the corresponding y-coordinate.

In other words, the location of a point P with the x-coordinate and the corresponding y-coordinate will be: P(x, y)

Using the same concept, we can determine the coordinates of point F.

The location of point 'F' lies on the x = 8.2 (x-coordinate) and their corresponding value of y=5.7 (y-coordinate).

i.e at x = 8.2, y = 5.7

Thus, the coordinates of point F would be: (x, y) = (8.2, 5.7)

Problem - 6x - 3 (y+2)

Answers

What are you trying to find? we can't solve this without you telling us what you're trying to find first.

Examine the system of equations -3x+y=4, -9x+5y=-1 what is the solution

Answers

Answer:

sorry i know im late but here

Step-by-step explanation:

Answer:

-3.5, -6.5

Step-by-step explanation:

Where most people get a mistake- Simplify the first equation to slope intercept form.

(y = 4+3x)

NOTICE- THE 3x IS POSITIVE

PLEASE HELP NOW I NEED TO TURN IT IN TODAY AND GET A 100% !!!
#8 !!!

Answers

Step-by-step explanation:

=| -9/10|+|7/4|

=9/10 +7/4

[tex] = \frac{9}{10} + \frac{7}{4} \\ = \frac{53}{20} \\ [/tex]

Option B is the answer

In what way was youth activism during the civil rights era the same as it is
today?
O A. People used popular culture to raise awareness,
O B. People participated in protests and marches.
C. People wanted social justice.
O
D. All of the above are correct.

Answers

It’s D which is all of above :(

What is the 21st term of the sequence with a1 = -5 and d = 6?
PLZ quick it is important

Answers

Answer:115

Step-by-step explanation:use the theory: a+(n-1)d= nth term

Answer:115

Step-by-step explanation:got it right on a test

Which expression is equivalent to (-7.5+21 1/4)+(-1/2)

Answers

Answer: use tiger algebra

Step-by-step explanation: .

179/4=44.75000

Answer:

the answer should be 179/4

Step-by-step explanation:

Curtis estimates that he can run 18 mph. About how many feet per second can Curtis run if there are 5280 feet in a mile?​

Answers

Curtis can run 26.4 feet per second

I WILL LITERALLY LOVE YOU THIS IS DUE TONIGHT PLEASEEE
Find the scale factor using the given scale drawings and measurements
below.
Scale Factor:
Actual = 3 cm
Scale Drawing = 5cm

Answers

Answer:

[tex]\frac{5}{3}[/tex]

Step-by-step explanation:

Scale factor: [tex]\frac{5}{3}[/tex]

204, 200,196,... find the 31st term

Answers

Answer:

31st term = 84

Step-by-step explanation:

Given:

204, 200,196,...

Find:

31st term

Computation:

204, 200,196,...

First term a = 204

Difference d = a3 - a2

Difference d = 196 - 200

Difference d = -4

An = a + (n-1)d

A31 = 204 + (31-1)(-4)

A31 = 204 - 120

A31 = 84

Answer:

84

Step-by-step explanation:

Solving two step equations.

-4p + 19=11​

Answers

Answer: p = 2

Step-by-step explanation:

hope this helps :)

-4p=11-19

-4p=-8

-4p/-4=-8/-4

p=2

Evaluate the function when x = –3, 0, and 1. h(x)=2.5x+7

Answers

Answer: H

(

x

)

=

1.25

x

2

+

7

x

+

C

Step-by-step explanation:hope it helps!

The second term of an arithmetic sequence is -39. The rule a, = a -1 + 12 can be used to find the next term of the
sequence. What is the explicit rule for the arithmetic sequence?
a, = -51+12(n-1)
O a = -39+12(n-1)
O a, = 12+(-39)(n-1)
O a = 12+(-51)(n-1)

Answers

Answer:

A. an = -51+12(n-1)

Step-by-step explanation:

edge quiz

The solution is, the explicit rule for the arithmetic sequence is

a n = -51 + ( n - 1 ) · 12 .

What is Arithmetic progression?

An arithmetic progression or arithmetic sequence is a sequence of numbers such that the difference between the consecutive terms is constant.

The nth term of AP : a_n = a + (n – 1) × d

here, we have,

given that,

a 2 = -39

a 2 = a 1 + 12

- 39 = a 1 + 12

a 1 = - 39 - 12

a 1 = - 51 ( first term )

The common difference is : d = 12

The explicit rule for the arithmetic sequence:

a n = a1 + ( n - 1 ) d

a n = -51 + ( n - 1 ) · 12

Hence, The solution is, the explicit rule for the arithmetic sequence is

a n = -51 + ( n - 1 ) · 12 .

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-2- 3(7-k) =-4(2k-1)

Answers

Answer:

k=27/11

Step-by-step explanation:

what is the answer to 2/5x = 5

Answers

Answer:

12.5 or 12 1/2

Step-by-step explanation:

Answer:

x= 12.5 or 12 1/2

Step-by-step explanation:

Hey, Whats The answer please explain your answer marking brainliest:D...................................................

Answers

Answer:

C

Step-by-step explanation:

Difference means subtract, and the only one that has a subtraction included is C

Brandon started with $25 in his savings account he adds $15 per week for a weeks write an expression to represent his account balance after w weeks

Answers

Answer:

15w + 25

Step-by-step explanation:

Answer:

Step-by-step explanation:

Well you would Multiply w by 15 for how many weeks and I can't add the answer because how do you multiply w by 15??? _/O\_

hich correctly explains how to estimate 33 percent of 87?
Round 33 percent to 20 percent and 87 to 80. Think of 20 percent as 10 percent + 10 percent. Find 10 percent of 80 as 8. So, 30 percent of 80 is 8 + 8, which is 16.
Round 33 percent to 30 percent and 87 to 90. Think of 30 percent as 10 percent + 10 percent + 10 percent. Find 10 percent of 90 as 9. So, 30 percent of 90 is 9 + 9 + 9, which is 27.
Round 33 percent to 35 percent and 87 to 90. Think of 35 percent as 10 percent + 10 percent + 10 percent. Find 10 percent of 90 as 9. So, 35 percent of 90 is 9 + 9 + 9, which is 27.
Round 33 percent to 40 percent and 87 to 80. Think of 40 percent as 10 percent + 10 percent + 10 percent. Find 10 percent of 80 as 8. So, 40 percent of 90 is 8 + 8 + 8, which is 24.

Answers

Answer

The anwser is C - Round 33 percent to 30 percent and 87 to 90. Think of 30 percent as 10 percent + 10 percent + 10 percent. Find 10 percent of 90 as 9. So, 30 percent of 90 is 9 + 9 + 9, which is 27.

Step-by-step explanation:

I got the anwser correct first try on the quiz.

  Hope this helps!

Answer:

B: Round 33 percent to 30 percent and 87 to 90. Think of 30 percent as 10 percent + 10 percent + 10 percent. Find 10 percent of 90 as 9. So, 30 percent of 90 is 9 + 9 + 9, which is 27.

Step-by-step explanation:

I took the quiz on edge 2020

641 divided by 34 with a remainder(pls explain using long division.)

Answers

Answer:

Step-by-step explanation:

      641 / 34 is 18

the remainder is 29

What value of m makes the equation true? 2(m+1.5)=m+10

Answers

Answer:

2(m+1.5)=m+10 m=7

Step-by-step explanation:

Distribute 2 to the m and the "1.5". You get 2m+3

You then drop the m+10 and the equation is 2m+3 = m+10

After that, you subtract the "m" over to the "2m" which becomes m+3 = 10

You then subtract the 3 over to the 10 which finally comes to m=7

This table gives the minutes players spent practicing basketball free throws and the number of baskets they made when they were timed the next day at practice.


Practice time (min) 45 100 57 8 90 63 25 84 30 120 19 18

Baskets made 15 21 18 5 22 18 19 23 16 20 7 10


What is the correlation coefficient of the data?



0.12


0.64


0.80


0.92

Answers

Answer:

0.79769, or 0.80 if you round it up

Step-by-step explanation:

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