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3 years ago

The regular nonagon has rotational symmetry of which angle measures

Mathematics

1 answer:

Margarita [4]3 years ago

6 0

Rotational symmetry = 360 / # sides
rotational symmetry = 360 / 9
rotational symmetry = 40 degrees

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Solve. (-k) + k = A. 0 B. k C. -2k D. 2k

Yuri [45]

Answer:

the correct answer is 0

Step-by-step explanation:

mark as me brainlist

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3 years ago

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Help plz what's <img src="https://tex.z-dn.net/?f=%5Csqrt%7B8%2A8%7D" id="TexFormula1" title="\sqrt{8*8}" alt="\sqrt{8*8}" a

-Dominant- [34]

Answer:

Step-by-step explanation:

$\sqrt{8*8}$ = $\sqrt{64}$

$\sqrt{64}$ = 8

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3 years ago

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In a certain state, license plates each consist of 2 letters followed by either 3 or 4 digits. How many differen license plates

coldgirl [10]

Answer:

26 × 26 × 10 × 10 × 10 = 676 , 000 possibilities

Step-by-step explanation:

There is nothing stating that the letters and numbers can't be repeated, so all 26 letters of the alphabet and all 10

digits can be used again.

If the first is A, we have 26 possibilities:

AA, AB, AC,AD,AE ...................................... AW, AX, AY, AZ.

If the first is B, we have 26 possibilities:

BA, BB, BC, BD, BE .........................................BW, BX,BY,BZ

And so on for every letter of the alphabet. There are 26 choices for the first letter and 26 choices for the second letter. The number of different combinations of 2 letters is: 26 × 26 = 676

The same applies for the three digits. There are 10 choices for the first, 10

for the second and 10 for the third:

10 × 10 × 10 = 1000

So for a license plate which has 2 letters and 3 digits, there are: 26 × 26 × 10 × 10 × 10 = 676 , 000 possibilities.

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3 years ago

What equation is graphed in this equation?

jenyasd209 [6]

Y-2=-3/2(x-2)
first of all, the slope of the line is -3/2, and there's only one equation that has that as a choice for the slope. Then you can take the x and y coordinates given in that equation you want to check and see if the line goes through that point. from the equation, (point-slope form y-y=m(x-x)) I know that the line should pass through point (2, -2), and looking at the graph, that is correct.

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3 years ago

If the interest rate on a savings account is 0.02%, approximately how much money do you need to keep in this account for 1 year

astraxan [27]

At first glance, this problem might be overwhelming so try approaching it slowly by doing these steps:

Step 1: Start by understanding what the problem is really asking.
You might notice that the problem is just a percentage problem, with a twist! If you still don't see it, the problem is just asking what the base should be given a percentage and the amount.

Step 2: Recall the concepts relevant to the question.
We can identify a single formula that will be important in getting the answer:
$base*percent=amount$

Step 3: Apply the concept to the context of the problem.
You'll see that we already have the percent from the interest rate which is 0.02% and the amount from the below-minimum-balance fee which is $9.99.

There goes the little twist: you have to manipulate the equation to get the base. Dividing both sides of the equation by the percent we'll have:
$base= \frac{amount}{percent}$

Step 4: Evaluate to get the answer to the problem.
We simply substitute the given numbers and evaluate.
$base= \frac{percent}{amount}= \frac{9.99}{0.0002} =49,950$

Answer: You need $49,950 in the account to cover the Below-Minimum-Balance Fee from your interest.

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4 years ago

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