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Veseljchak [2.6K]
3 years ago
13

I need to find the circumference and area of a circle with a diameter of 20 cm

Mathematics
1 answer:
slega [8]3 years ago
4 0
The diameter is 20 so the radius is 10.
A=<span>πr^2
A=</span>π10^2
A=100π

C=2πr
C=2π10
C=20π
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If there are n ants once a month how many will there be a month la
Elza [17]

Answer: 3<em>n</em> ants

Step-by-step explanation:

         If there are n ants one month, and the ants triple every month, then next month there will be 3<em>n</em> ants.

         We can multiply 3 by <em>n</em> to show it tripling.

      To test this, 3(10,000) = 30,000 and 3(270,000) = 810,000, which corresponds to what you've filled out in the table.

4 0
2 years ago
Please help me.. thanks if you do
Paladinen [302]

Answer:

B

Step-by-step explanation:

We can graph the line using the y and x-intercepts. To find the y-intercept, we substitute x = 0 into y = -2x - 2 so the y-intercept is (0, -2). To find the x-intercept, we substitute y = 0 into y = -2x - 2 so the x-intercept is (-1, 0). The line that goes through both of these points is line B.

6 0
3 years ago
Read 2 more answers
the phrase “is a function of” gets used in non-mathematical speech as well as mathematical mathematical speech in sentences like
Tanya [424]

Answer:

Step-by-step explanation:

This is a very interesting question. I'm going to answer no, but don't take that to mean that the question is not worthwhile. It is.

In math, function has the meaning of considering ordered pairs. Here are 4 such ordered pairs.

(1,2)

(2,4)

(1,-3)

(5,9)

They are really not related to one another except all are ordered pairs.

Here's the math definition. If one of the x values (1,2,1,5) has more than 1 y value, you do not have a function.

1 has 2 y values,  2 and -3. Therefore the 4 points do not form a function

if you change the first (1,__) to 0 and your ordered pair becomes (0,2), all is well and you do have a function.

Whether you understand this or not, you have to see that a math function and a biology function are very different. The math function has numbers and those numbers have to obey a rule.

The biology function seems to be saying that how your mom and dad brought you up will determine what foods you like.

Those two uses are very different. How your mom brought you up is related to food. It could be anything else like "Being a knife carrying gang member is a function of where you live."

4 0
3 years ago
Factorize : x^3 + 6x^2 + 11x + 6<br> can you tell me the fast cause i am doing my exam:)
Tatiana [17]
I’m not sure if it’s right but I got (x+1)(x+2)(x+3) as an answer.

Explanation: factor by grouping (x+1)(x^2+5x+6)
Find one factor use factor by grouping and that’s how I got the answer (x+1)(x^2)(x+3) I hope this helps you
5 0
3 years ago
The table shows Katrina’s prices for a walk for dog walking if she walked five medium size dogs and eight large size dogs for 12
tankabanditka [31]
5x$12= 60$ so 60$per week 60$x12 = $720 for the Medium dogs.

8x14$= 112$ per week, she walked them 12 weeks. 112x12= $1344 for the large dogs.

Now take the two prices $720+$1344= $2,064

She earned a total of $2,064 from walking the dogs.

Hope this helped.
3 0
3 years ago
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