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Ugo [173]
2 years ago
9

Find the area and the circumference of the circle. Round your answers to the nearest hundredth.

Mathematics
1 answer:
Alik [6]2 years ago
3 0

Answer:

area = 200.96  \: {units}^{2}  \\ circumfrence = 50.24 \: units

Step-by-step explanation:

The formula to find the area and circumference of a circle is:

area = \pi {r}^{2}  \\ circumfrence = 2\pi \: r

<em>*</em><em>no</em><em>te that pi is 3.14*</em><em> </em>Therefore the area is:

formula = \pi {r}^{2}  \\ 3.14 \times  {8}^{2}  =  \\ 3.14 \times 64 = 200.96

Therefore the circumference is:

formula = \: 2\pi \: r \\ (2)(3.14)(8) =  \\ 3.14 \times 16 = 50.24

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X is at most 30 represent as an algebraic inequality
masya89 [10]

Answer:

x ≤ 30

Step-by-step explanation:

'at most' means the same as 'less than or equal to'.

The sign 'for less than or equal' to is ≤.

So it's simply x ≤ 30.

6 0
3 years ago
It is estimated that there are 21 deaths for every 10 million people who use airplanes. A company that sells flight insurance pr
Yuki888 [10]

Answer:

$0.79 profit per person who buys a policy

Step-by-step explanation:

For every 10 million people who buy a policy the expected outcome is

<em>$(21*100,000) = $2,100,000  (21 deaths out of 10 million)</em>

the expected income is  

$10,000,000  ($1 per sold policy)

So the <em>expected profit </em>is

$10,000,000 - $2,100,000 = $7,900,000

To obtain how much the insurance company can make for each policy that it sells, we <em>cross multiply </em>

10,000,000 people ---------> $7,900,000 profit

1 person   -----------------------> x

and

10,000,000=7,900,000/x and x = $0.79 profit per person who buys a policy

4 0
4 years ago
A quarterly telephone bill consist of N$79.15 rental plus 4.7 cents for each dialled unit. Sales tax is added at 15%. What is th
lidiya [134]
$4.7 × 915 = 4300.5
$4300.5 + 79.15 = 4379.65
15% of 4379.65 = 656.9475
4379.65 + 656.9745 = 5036.6245
Mrs. Jones' Bill was $5036.63
(Rounded to the nearest 1/10)
8 0
3 years ago
Read 2 more answers
2x + 4y = 1<br> 3x - 5y = 7<br> solve the simultaneous equations x
Norma-Jean [14]

Answer:

(x,y)=(3/2, -1/2)

Step-by-step explanation:

2x+4y=1  /*3

3x-5y=7  /*(-2)

6x+12y=3

-6x+10y=-14

...........................

/      22y=-11

      y= -11/22

     y= -1/2

2x+4*(-1/2)=1

2x-2=1

+2     +2

2x=3

x=3/2

so the solutionis (x,y)=(3/2, -1/2)

7 0
3 years ago
A species of rodent has been reintroduced to a forest. About 100 of the rodent where transplanted. After 8 years the population
kirza4 [7]
<span>The exponential equation for this is given by: A = Be^t. Where A = 1700 B = 100 e =? 1700 = 100e^(8) e^8 = 17000/100 = 170 So e = 8âš170 = 1.9</span>
5 0
3 years ago
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