Select all the figures with 180° rotation symmetry. A. image A: right, isosceles triangle

B. Image B: rectangle

C. Image C: square

D. Image D: regular pentagon

E. Image E: regular hexagon

plz help me

A figure with a rotation symmetry will look the same, when rotated. The figures with rotation symmetry are:

B: rectangle

C: square  

E: regular hexagon

For a shape to have a rotation symmetry, the following must be true.

Options (a) and (d) do not meet any of the above conditions.

However, the stated conditions are true for options (b), (c) and (e); because they have parallel & equal opposite sides; and they have an even number of sides.

Hence, the rectangle, the square and the regular hexagon have a rotation symmetry

See attachment for an illustration of rotation symmetry.

Read more about rotation symmetry at:

link

answer: the price of one pound cabbage = $ 0.8

the point (10,8) represents that the cost of 10 pounds cabbage is $ 8

step-by-step explanation:

since, here is a proportional relation between the number of pounds of cabbage (x) and the price in dollars (y).

therefore, we can write,

⇒ y = k x

where k is the constant of proportionality.

now, point (5,4) is in the line.

thus, it will satisfies the above equation of line.

⇒ 4 = 5 k

⇒ k = 0.8

thus, the equation of the line is,

y = 0.8 x

a) for x = 1,

y = 0.8

therefore, the cost of one pound of cabbage is 0.8 dollars.

b) in the below graph (10,8) represents that the cost of 10 pounds of cabbage is 8 dollars.

so far i think you have the right thing going for you just remember soh cah toh

step-by-step explanation:

sine over hypotenuse

cosine   equals adjacent

tangent over hypotenuse