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astra-53 [7]
3 years ago
11

1. Use the figure shown to complete part a and b.

Mathematics
1 answer:
gregori [183]3 years ago
8 0

Answer:

a) 745.43 cm²

b)129.26 cm

Step-by-step explanation:

a) The area of the figure is the sum of the area of the rectangle and the area of the semicircle.

Keeping this on mind, you have that the area of the figure is:

A_{figure}=A_{rectangle}+A_{semicircle}\\A_{figure}=length*width+\frac{radius^{2}\pi}{2}\\A_{figure}=(25cm)(20cm)+\frac{(12.5cm)^{2}\pi}{2}\\A_{figure}=745.43cm^{2}

b) The perimeter of the figure is:

 P_{figure}=(2length+2width)+\frac{diameter*\pi}{2}=2(25cm)+2(20cm)+\frac{(25cm)\pi}{2}=129.26cm

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B) 4cm

Step-by-step explanation:

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2 years ago
what transformation occurs(vertically stretched, vertically compressed, reflection, translation, rotation, etc) happens when a f
trasher [3.6K]
<h3>Answer: reflection over x axis</h3>

g(x) = -f(x) is the same as g(x) = -1*f(x)

Since y = f(x), we are really saying g(x) = -1*y. Whatever the y coordinate is on f(x), multiply it by -1. This turns something like y = 2 into y = -2, or something like y = -3 into y = 3, etc etc. Visually this reflects the point over the horizontal x axis. Do this to all points on f(x), and the entire curve reflects over the x axis.

I show an example of y = x^2 turn into y = -x^2 in the attached image below.

8 0
3 years ago
A store has a sale on t-shirts and jeans, in which t-shirts cost $4 and jeans cost $15. If the store wants to sell more than $80
fgiga [73]

Answer:

I think its D

Step-by-step explanation:

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7 0
2 years ago
Read 2 more answers
20% of what number is 80?<br><br><br> I need the right answer, this is my last shot of passing.
LekaFEV [45]
100%/x%=80/20 (100/x)*x=(80/20)*x - we multiply both sides of the equation by x 100=4*x - we divide both sides of the equation by (4) to get x 100/4=x 25=x x=25
5 0
3 years ago
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Find the perimeter use 3.14
Alex777 [14]
Hey,
So we have to solve this in multiple steps. Step 1 is to find the circumference of the semi-circle and multiply by three since there are three. Step 2 would be to find the perimeter of the rectangle.  Step 3 would be to add those two together.

Step 1: To find the circumference of the semicircle use the formula pi (3.14) times radius (8 ÷ 2 = 4) times 2. After that we will divide by two since there is only half. After that we will multiply that answer by three.
C = 3.14 x 4 x 2
C = 12.56 x 2
C = 25.12

C = 25.12 ÷ 2
C = 12.56

Perimeter = 12.56 x 3 = 37.68

Step 2: To find the perimeter of the rectangle/square add all the sides (8).
Perimeter = 8 + 8 + 8 + 8 = 32

Step 3: Now add the two previous answers to get the final perimeter.
37.68 + 32 = 69.68

Final Answer: 69.68
Hope this helped!

Cheers,
Izzy

8 0
3 years ago
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