Pleae help I don’t really get it

. 9/16

Step-by-step explanation:

The dilation scale is applied to the dimensions of the edges of the faces.

The original was, for example, 1×1, so the area of each face is 1 square unit.

The dilated edge is 3/4.

3/4 × 3/4 is 9/16

The surface area of the entire cube is reduced by that factor.

x=-2

infinite number of lines, so there is an infinite number of equations.

step-by-step explanation:

there are an infinite number of line that passes through the point (-2,5)

x=-2   is one line that passes through the point

y = 5 is another line that passes through the point

(these two lines are perpendicular to each other).

since the number of   numbers are infinite and the slope is the ratio of two numbers,(change in y over change in x) we can have an infinite number of slopes.     our only condition is that it passes through the point (-2,5)

80π/3 or about 83.775

step-by-step explanation:

since a cone is 1/3 of a cylinder, we need to find the base's area. since area = πr^2, we get 16π. then, multiplying this by 5, we get 80π. dividing by 3, since the cone's volume is 1/3 of that of a cylinder's, we get 80π/3.

hope this !