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Dmitry [639]
3 years ago
15

SOMEONE HELP ME plzzzzzzzzzzzzzz

Mathematics
1 answer:
Leona [35]3 years ago
3 0
To find the answer you have to find the area of the fountain using A= pi r^2.
=(3.14)(64)
=200.96

Then you have to find the area of the big circle.
=(3.14)(11^2)
=379.94

Then subtract them both (379.94-200.96) and you get the answer 178.98 which can be rounded to 179 aka A.
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How many times farther is Mars than Venus from the sun?
Alexandra [31]

Answer:

75,000,000

Step-by-step explanation:

To find how much father Mars is to Venus to the sun you just subtract the two numbers.

7 0
3 years ago
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Let f(x) = cx^k be a power function such that f(13) is four times the size of f(1). What is the power k?
Ivenika [448]

Answer:

0.540

Step-by-step explanation:

Hi there,

To get started in order to solve this, please recall the property of logarithms.

This question is a bit tricky, but doable. Best way to solve this is first compare the two functions:

f(x) = cx^{k} \\ f(13)=4f(1)  

Now, let's see what the function gives at 13 and 1:

f(13)=c13^{k}\\f(1)=c1^{k}

Something to recognize is that 1 to the power of <em>anything</em> is just 1, so f(1) is reduced to:

f(1)=c  We are making progress!

Next, we can set both f(13) forms equivalent to each other, watch this:

f(13)=f(13) = 4f(1) but we know what f(1) is equal to, and let's substitute our knowns:

c13^{k}=4c1^{k} = 4c the c constant on both left and right side cancel out:

13^{k}=4 Now, take the logarithm form of both side of the equation. I used natural log, but you can also use common logs:

ln(13^{k})=ln(4)  ⇒ k*ln(13)=ln(4) this was performed using <em>the power  log rule. </em>

Isolate k:

k=\frac{ln(4)}{ln(13)} =0.540 using a calculator.

If you liked this solution, hit Thanks or give a rating!

thanks,

8 0
3 years ago
Please help me with this​
Art [367]

Answer:

the mean is 5

Step-by-step explanation:

because if you add all the numbers and divide by the number of digits you should get the equation 40/8= 5 and that´s the answer

6 0
2 years ago
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She would need to put 1 3/4 more cups in.
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3 years ago
What is the volume of a cube which has an edge measuring 2cm
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Volume = height x base x length as all the sides are 2cm
volume= 2x2x2 = 8cm³
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3 years ago
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