Which figuare has an order 3 rotational symmetry?

1 answer:

5 0

Many shapes have rotational symmetry. Such as rectangles , squares , circles. If at any point the object appears exactly like It did before it did the rotation it has rotational symmetry

Hope this helps might be late tho :)

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You can anwser either one it dont matter to me just as long as you show the work

Jet001 [13]

I think it is 35 but I could be wrong

6 0

4 years ago

I am so confused plz no spam answers or I will report them and there are not any answer choices

GalinKa [24]

This problem is a multi step problem. All you have to do is break it down into parts to make it easier. We can start by finding the diameter of the inner circle.

1. circumference = πd (Since the circumference is given as 44, and we know to use 22/7 for π, divide 44 by 22/7 to get d.)
44 / 22/7 = about 14.0 when rounded

2. Now add +8 to the 14 since we know that there are 4 ft. on both sides of the small inner circle.
14 + 8 = 22

3) The last step gave us the diameter of the bigger outer circle. Now, we have to plug in the 22 for d in the formula for circumference to find the circumference of the outer circle.
c = πd → c = 22 * 22/7 = 484/7 (484/7 = about 69 when rounded as a decimal)

4) The last step now is to subtract the circumferences, since the problem was asking for how much greater the outer circle's circumference is than the inner circle.
69 - 44 = 25

Your answer should be about 25 ft.

********** Note the answer they are looking for may be slightly different depending on whether they were looking for a fraction or decimal answer and where they rounded. ********************************************************

6 0

4 years ago

What is the equation of the circle with center (-3,1) that passes through the point (-5, 3)?

Natali5045456 [20]

Answer:

Option B) (x + 3)^2 + (y – 1)^2 = 8 is the correct answer.

Step-by-step explanation:

The equation of a circle with center (h,k) and radius r is given by:

$(x-h)^2 + (y-k)^2 = r^2$

Given

Center = (h,k) = (-3,1)

=> h = -3

=> k = 1

The distance between the center of circle and the point through which the circle passes will be the radius.

The distance formula is given by:

$r = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2$

Given

$(x_1,y_1) = (-3,1)\\(x_2,y_2) = (-5,3)$

Putting the values in the formula

$r = \sqrt{(-5+3)^2+(3-1)^2}\\r = \sqrt{(-2)^2+(2)^2}\\r = \sqrt{4+4}\\r = \sqrt{8}$

Putting the values of h,k and r in general form of equation

$\{x-(-3)}^2\} +(y-1)^2 = (\sqrt{8})^2\\(x+3)^2+(y-1)^2 = 8$

Hence,

Option B) (x + 3)^2 + (y – 1)^2 = 8 is the correct answer.

4 0

3 years ago

What is the reason for each step in the solution of the equation? 19=5x−119=5x−1 drag and drop the reasons into the boxes to cor

shutvik [7]

The steps are duplicated.Then, first I will write the steps in the right form:

19 = 5x - 1

20 = 5x

4 = x

Now, I will write the steps with the justification

19 = 5x - 1.... start

20 = 5x ..... Reason: addtion property of equality (you get this by adding +1 to both sides of the previous equality)

4 = x .... Reason: division property of equality (you get this by dividing by 5 both sides of the previous equality)

8 0

3 years ago

Read 2 more answers

F(0) = -5, f(4) = -3

Karolina [17]

Answer:

y = $\frac{1}{2}$ x - 5