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babymother [125]
3 years ago
7

The radius of a semicircle is 3 centimeters. What is the semicircle's diameter?​

Mathematics
2 answers:
Aliun [14]3 years ago
4 0

Answer:

6 cm

Step-by-step explanation:

The diameter is 2x the radius

eimsori [14]3 years ago
4 0

Answer:

14.13

Step-by-step explanation:

Formula for  radius x radius x 3.14

9 x 3.14 = 28.26

Divide by two since half of a circle

14.13

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Pamela wants to buy a suitcase whose dimensions are 1 1/2 times those of her 28 times 16 times 8 inch suitcase. How is the ratio
trapecia [35]
Multiply the dimensions by 1.5 and Pamela's suitcase becomes 42" x 24" x 12". 

<span>Volume of 28" x 16" x 8": 3584 in^3 </span>

<span>Volume of 42" x 24" x 12": 12,096 in^3 </span>

<span>The volume ratio is 3.375, and yes, you have to cube it.</span>
8 0
3 years ago
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Follow this link to view Juan's work. Critique Juan's work by justifying correct solutions and by explaining any errors he made
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Answer:

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4 0
3 years ago
If the length of a rectangle is 120 m and the diagonal measures 130 m what is the perimeter and area of the rectangle
Leviafan [203]

Answer:

Step-by-step explanation:

width=√(130²-120²)=√[10²(13²-12²)]=10√(13+12)(13-12)=10√(1×25)=10×5=50 m

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area=120×50=6000 m²

5 0
2 years ago
In 2010, the average cost of electricity was 11.54 cents per kilowatt hour. In 2014, the average cost of electricity
Marianna [84]

Answer:

B

Step-by-step explanation:

6 0
2 years ago
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Air pressure may be represented as a function of height (in meters) above the
denis-greek [22]

Answer: OPTION C.

Step-by-step explanation:

<h3> The complete exercise is: "Air pressure may be represented as a function of height (in meters) above the surface of the Earth, as shown below:</h3><h3>  P(h) =P_0e^{-0.00012h} </h3><h3> In this function P_o   is the air pressure at the surface of the earth, and h is the height above the surface of the Earth, measured in meters. At what height will the air pressure equal 50% of the air pressure at the surface of the Earth"</h3><h3></h3>

Given the following function:

P(h) =P_0e^{-0.00012h}

In order to calculate at what  height the air pressure will be equal 50% of the air pressure at the surface of the Earth, you can follow these steps:

1. You need to substitute P(h)=0.5P_o into the function:

0.5P_o=P_0e^{-0.00012h}

2. Finally, you must solve for h.

Remember the following property of logarithms:

ln(b)^a=a*ln(b)\\\\ln(e)=1

Then, you get this result:

0.5P_o=\frac{P_o}{e^{0.00012h}}\\\\(0.5P_o)(e^{0.00012h})=P_o\\\\e^{0.00012h}=\frac{P_o}{0.5P_o}\\\\ln(e)^{0.00012h}=ln(2)\\\\0.00012h*1=ln(2)\\\\h=\frac{ln(2)}{0.00012}\\\\h=5576.2

7 0
3 years ago
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