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vodka [1.7K]
3 years ago
14

The following three shapes are based only on squares, semicircles, and quarter circles. Find the perimeter and the area of each

shaded part. Give your answer as a completely simplified exact value in terms of π (no approximations).

Mathematics
1 answer:
MakcuM [25]3 years ago
6 0
The perimeter = 4 * length of a semicircle of radius 5 == 4*  pi * 5 =  20 pi cm



The area of one of the clear parts = 1/2 area of square - area semicircle

= 1/2 * 10^2  -  1/2 pi *5^2 = 50 - 12.5pi 

So area of shaded parts =  area of square -  4 (50 - 12.5pi)
 = 100 - 200 + 100pi = (100pi - 100) cm^2 
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JulsSmile [24]

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6 0
3 years ago
2. The 7th term of an A.P is 27 and the 12th term is 47, what is the sequence?
Vera_Pavlovna [14]

Answer:

<h2>3 + 4(n - 1)</h2>

Step-by-step explanation:

let r be the common differenc of the sequence

Term 12 - Term 7 = (12 - 7)r

then

47 - 27 = 5r

then

20 = 5r

then

r = 4

term 7 = term 1 + (7 - 1)r

then

27 = term 1 + 6r = term 1 + 24

then

Term1 = 27 - 24 = 3

<em><u>therefore </u></em>

the standard explicit formula of the sequence is :

term 1 + (n - 1)r = 3 + 4(n - 1)

8 0
3 years ago
Please im finna fail my NWEA testtttt
julia-pushkina [17]
I think it’s B. since it’s on the adjacent & hypotenuse side it makes it cosine, and the correct way to set it up is B i believe. hopefully i’m not wrong because it could also be D
7 0
3 years ago
Read 2 more answers
Graph this function:<br> y = 2x
77julia77 [94]

Graph is attached below.

Step-by-step explanation:

We have to graph function y = 2x,

From  equation, we can see a linear relationship between the values of x and y.  This equation shows that the value of y is double than the value of x.

For example,

<u>x = 0</u>

y = 2(0)

y = 0

So, point would be (0,0)

<u>x = 1</u>

y = 2(1)

y = 2

So, point would be (1,2)

<u>x = 3</u>

y = 2(3)

y = 6

So, point would be (3,6)

<u>x = -1</u>

y = 2(-1)

y = -2

So, point would be (-1,-2)

<u>x = -3</u>

y = 2(-3)

y = -6

So, point would be (-3,-6)

By matching these points, a linear graph can easily be drawn. I have also attached the graph pic below.

Keywords: function, graph

Learn more at:

brainly.com/question/1600331

brainly.com/question/2334270

#LearnwithBrainly

6 0
3 years ago
You are spreading fertilizer on a golf course at the rate of 40 pounds per 10,000 square feet. If the course is 320 acres, how m
Marianna [84]

Answer:

The correct answer is B: 28 tons



3 0
3 years ago
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