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3 years ago

How many lines of reflectional symmetry does the regular hexagon have?

Mathematics

1 answer:

Rainbow [258]3 years ago

7 0

A regular hexagon has 3 lines of reflectional symmetry: 2 diagonal, 1 horizontal, and 1 vertical.

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Gina, Sam, and Robby all chose movies they would like to see over the next year. They each chose some dramas, comedies, and docu

gavmur [86]

Answer: B. x + y + z = 11

2x + 3y + 2z = 27

x + 2y + 2z = 19

C. x + y + z = 11

Step-by-step explanation:

Let x represent the number of dramas that each of them chose.

Let y represent the number of comedies that each of them chose.

Let z represent the number of documentaries that each of them chose.

Gina chose 11 movies total. This means that

x + y + z = 11 - - - - - - - - - - - 1

Sam chose twice as many dramas, three times as many comedies, and twice as many documentaries as Gina. He chose 27 movies total. This means that

2x + 3y + 2z = 27 - - - - - - - - - - - 2

Robby chose 19 movies total with the same number of dramas, twice as many comedies, and twice as many documentaries as Gina. This means that

x + 2x + 2y = 19 - - - - - - - - - - - 3

equations 1,2 and 3represents their movie choices.

4 0

4 years ago

A locker combination contains four digits. Each digit can be from 0 through 9. What is the probability that a 4-digit combinatio

konstantin123 [22]

Answer: .81%

<u>Step-by-step explanation:</u>

Since each digit has to be greater than 6, that leaves only 7, 8, & 9 as successful digits.

$Probability = \dfrac{successful}{total\ possible}=\dfrac{3\times 3\times 3\times 3}{10\times 10\times 10\times 10}=\dfrac{81}{10,000}=.0081=.81\%$

4 0

3 years ago

Read 2 more answers

A circle and a regular pentagon can intersect in

lbvjy [14]

Answer:

I think it is option D,

hope it helps

5 0

3 years ago

20 POINTS FOR GEOMETRY QUESTION!!

SIZIF [17.4K]

The answer is 1/4

Explanation
===============================
The question focuses on "if the student is known to be a boy..." we would obviously know that we would focous on only the total of the boys.

We have the formula for the probability of an event of happening which we would call event A (a boy being left-handed). P(A)= number of favorable outcomes/ total number of possible outcomes. The left-handers would go in the favorable outcomes since we want the probability of a boy being left handed and we would place the total boys in the total number of possible outcomes since all of them are going to be the one to be randomly picked. 50 left-handed/ 200 total boys. We have our fraction that is 50/200 as the probability but we can simplify it! We simplify 50/200 to get 1/4!!! 1/4 is the probability of a boy being picked that is left-handed!

Hope this helps!

6 0

4 years ago

How to evaluate this question

Harlamova29_29 [7]

The answer is 16

Refer image for working :-

Drop comments if any doubt arises.

3 0

3 years ago

Read 2 more answers