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frutty [35]
3 years ago
9

Find the circumference of the following circle. Use 3.14 for π. Round to the nearest hundredth

Mathematics
2 answers:
Digiron [165]3 years ago
8 0

Answer:

56.55

Step-by-step explanation:

C=2πr=2·π·9≈56.54867cm

LuckyWell [14K]3 years ago
5 0

Formula for the circumference of a circle:

C = 2πr     (C = circumference      π(pi) = 3.14.....    r = radius)

You know:

r = 9 cm      

π = 3.14       So substitute/plug it into the equation

C = 2πr

C = 2(3.14)(9)

C = 56.52 cm      

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The population of a city is increasing at a rate of 4% each year. In 2000, there were 236,000 people in the city. Write an expon
sukhopar [10]

Answer:

A = 236,000 (1+ 0.04)^9

335,902 people in 2009

Step-by-step explanation:

Hi, to answer this question we have to apply an exponential growth function:  

A = P (1 + r) t  

Where:  

p = original population (in 2000)

r = growing rate (decimal form) = 4/100 = 0.04

t= years  

A = population after t years  

Replacing with the values given:  

A = 236,000 (1+ 0.04) ^t

To find the population in 2009:

We have to calculate the number of years passed since 2000: (2009-2000 = 9 years =t)

Substituting t=9 in the function:

A = 236,000 (1+ 0.04)^9

A =335,902 people

Feel free to ask for more if needed or if you did not understand something.  

3 0
3 years ago
A musical group sells t-shirts at their concert. After one concert they sold 120 out of 200 white t-shirts and 240 out of 300 bl
Fed [463]

Answer:

A greater percentage of blue T-shirts were sold.

see the explanation

Step-by-step explanation:

we know that

To find out the percentage sold, divide the number of shirts sold by the total number of shirts and multiply by 100

so

<em>White t-shirts</em>

total shirts 200

shirts sold 120

\frac{120}{200}(100)=60\%

<em>Blue t-shirts</em>

total shirts 300

shirts sold 240

\frac{240}{300}(100)=80\%

Compare

80\% > 60\%

therefore

A greater percentage of blue T-shirts were sold.

7 0
3 years ago
What is the overlap of Data Set 1 and Data Set 2?
Mrrafil [7]

Answer: Low

The overlap of data set 1 and data set 2

6 0
3 years ago
10 points!!!!! Do 14 and 15 only hurry please.
Aleksandr [31]

Answer:

8. x = 16

9. x = 10

14.

m ∠RSU = 130°

m ∠UST = 50°

15.

m ∠RSU = 124°

m ∠UST = 56°

Step-by-step explanation:

8.

Given ∠DEF is bisected by EG. That is , ∠DEG = ∠GEF

That is , (x + 15)° = 31°

                x = 31 - 15 =  16

9.

Given ∠DEF is bisected by EG. That is , ∠DEG = ∠GEF

That is ,

           (6x - 4)° = 56°

            6x = 56 + 4

               6x = 60

                 x = 10

14.

13x + 5x = 180°                       [straight line angles ]

18x = 180

x = 10

m ∠RSU = 130°

m ∠UST = 50°

15.

4x + 12 + 2x = 180°                       [ straight line angles]

6x = 180 - 12

6x = 168

x = 28

m ∠RSU = 4(28) + 12 = 112 + 12 = 124°

m ∠UST = 2(28) = 56°

3 0
3 years ago
Read 2 more answers
A navy submarine descended at a rate of 4 feet per second. a. Write the descent rate as an integer. b. Write an expression to fi
Rasek [7]

Answer:

1200

Step-by-step explanation:

Since the value they are asking for is in minutes, we need to convert seconds to minutes. We can do that by multiplying 4 and 60, because there are 60 seconds in a minute, and we need to find the value of one minute.  Also because the value they gave is 4. When we do this, we get 240. To get the final answer, we need to multiply 240 and 5, because 240 is the descending rate per minute, and they are asking for 5 minutes. When we do this, we get 1200.

(I might get this wrong, so like yeah.)

5 0
3 years ago
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