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WITCHER [35]
3 years ago
15

If an atom has a radius of 65pm, what is its circumference

Mathematics
1 answer:
SOVA2 [1]3 years ago
3 0
To calculate circumference, you must use the equation (65)(2)(Pi) which would be 408.2pm. (IF YOU COUNT PI AS 3.14)
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Write the trinomial as a square of a binomial.<br><br> x²+2xy+y^2
Minchanka [31]
The answer is (x+y)^2
Hope this helps!!

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2 years ago
Sovle for the angle meassures and fill in the blanks
tatiyna
Where is the picture?
5 0
3 years ago
Which of the following correctly describes the domain of the function shown
labwork [276]

Option D:

\{x: x \neq 1\} is the domain of the function.

Solution:

Given function is

$r(x)=\frac{2 x}{x-1}

<u>To find the domain of the function:</u>

Option A: \{x: x \neq 0\}

Substitute x = 0 in r(x).

$r(0)=\frac{2 \times 0}{0-1}=0

If x = 0, then r(0) = 0

So that x ≠ 0 is false.

So, \{x: x \neq 0\} is not the domain of the function.

Option B: \{x: x \neq \pm 1\}

Substitute x = –1 in r(x).

$r(-1)=\frac{2 \times (-1)}{-1-1}=1

If x = –1, then r(–1) = 1

So that x = ± 1 is false.

So, \{x: x \neq \pm 1\} is not the domain of the function.

Option C: $\{x: \text { all real numbers }\}$

Substitute x = 1 in r(x).

$r(1)=\frac{2 \times 1}{1-1}=\frac{2}{0}

It is indeterminate.

So, all real numbers are not the domain of the function.

Option D: \{x: x \neq 1\}

Substitute x = 1 in r(x).

$r(1)=\frac{2 \times 1}{1-1}=\frac{2}{0}

It is indeterminate.

So, \{x: x \neq 1\} is the domain of the function.

4 0
3 years ago
A cell phone company charges $4 per GB beyond
MArishka [77]

Answer:

25GB was used that month

Step-by-step explanation:

Here, we want to calculate the GB used for the month.

Since we have $59.99 for 20GB, then the extra that brought the bill to $75.99 must have been from the beyond charges.

The extra charges is thus $75.99 - $59.99 = $20

Now, since $4 is charged as extra and we have a total of $20, the number of extra GB is thus 20/4 = 5

So the total GB for that month is 20 + 5 = 25GB

8 0
3 years ago
Ed is on a road trip he has already traveled 201 miles and is driving at a rate of 61 mph the equation could be used to find how
Bas_tet [7]

Answer:

Ed has traveled for 3 hours and 17 minutes, and has 2 hours and 28 minutes left to travel.

Step-by-step explanation:

Given that Ed is on a road trip and he has already traveled 201 miles and is driving at a rate of 61 mph, the equation could be used to find how many hours he has traveled and how many and has left in his road trip traveling 697 total miles is the next:

201/61 = 3.29

100 = 60

29 = X

29 x 60/100 = X

29 x 0.6 = X

17.4 = X

So, Ed has traveled for 3 hours and 17 minutes.

697 - 201 = 496

496/201 = 2.46

100 = 60

46 = 0

46 x 0.6 = X

27.6 = X

Thus, he has 2 hours and 28 minutes to travel.

6 0
3 years ago
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