# A regular octagon can be concave.True or False? Please explain.Thanks!

a regular polygon has all equal angles, interior and exterior, as well as all equal sides.

Check the picture below.

the one on the left is a regular octagon, as well as a convex one.

the one on the right is also an octagon, but is concave, the  issue is that, though all sides remain equal, the angles do not, and so is not a regular octagon.

## Related Questions

A physicians order states that 10 grains of medication are to be give; the tablets contain 2.5 grains each. How many tablets should be given

4 tablets should be given.

On each trial of an experiment, a subject is presented with a constant soft noise, which is interrupted at some unpredictable time by a noticeably louder sound. The time it takes for the subject to react to this louder sound is recorded. The following list contains the reaction times (in milliseconds) for the trials of this experiment: 296, 311, 202, 217, 231, 171, 241, 164, 257, 269, 175, 273, 285, 226, 261 Find 25th and 80th percentiles for these reaction times.

25th percentile = 202

80th percentile = 285

Step-by-step explanation:

Rearranging the values in increasing order

164

171

175

202

217

226

231

241

257

261

269

273

285

296

311

N = total number of variables = 15.

25th percentile = [(N + 1)/4]th variable = (15 + 1)/4 = 4th variable.

So, the 25th percentile = 4th variable = 202.

80th percentile = 0.8(N + 1) th variable = 0.8 × (15 + 1) = 12.8th variable = 13th variable = 285

To find the 25th and 80th percentiles for the reaction times, sort the list and determine the corresponding values.

### Explanation:

To find the 25th and 80th percentiles for the reaction times in this experiment, we need to first sort the list in ascending order:

1. 164
2. 171
3. 175
4. 202
5. 217
6. 226
7. 231
8. 241
9. 257
10. 261
11. 269
12. 273
13. 285
14. 296
15. 311

The 25th percentile is the value that separates the lowest 25% of the data. In this case, it is the 4th value in the sorted list, which is 202 milliseconds. The 80th percentile is the value that separates the lowest 80% of the data. In this case, it is the 12th value in the sorted list, which is 273 milliseconds.

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Use the product rule to calculate the derivatives of
( ax² + bx + c ) ( cx + d )

• c and d are constants

• Product rule is as below:

• u is (ax² + bx + c)
• v is (cx + d)
• du/dx is 2ax + bx
• dv/dx is c

Sam wants to meet his friend Beth at a restaurant before they go to the theater.The restaurant is 9km south of the theater.

Okay now I know its 9km from the theater, but what is the question? Or what ties to this?

Step-by-step explanation:

Find the marking point for both Sam and Beth and u got ur answer

Heather won 62 pieces of candy after bobbing apples at a Halloween party. She gave 4 pieces of candy to every student in her math class. She has six pieces of candy left. How many students are in Heather’s math class?

14

Step-by-step explanation:

62-6=56

56 divided by 4 = 14

What is the remainder of 525 divided by 28? as a whole number

The remainder of 525 divided by 28 is 21

First step

Division

525 ÷ 28

= 18

Second step multiply 28 by 18

28 × 18

= 504

Now let determine remainder of 525 divided by 28

Remainder=525 - 504

Remainder= 21

Inconclusion remainder of 525 divided by 28 is 21

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R = 21

Step-by-step explanation:

525 ÷ 28 = 18 R 21

28 × 18 = 504

525 - 504 = 21

Therefore, the remainder is 21.

Hope this helps! :)