Which of the following shapes has an apex? select all that apply.

sphere

cone

cylinder

cube

pyramid

B. Cone,

E. Pyramid.

Step-by-step explanation:

We are asked to choose the shapes which have an apex.

We know that apex is the highest point of a shape and it is directly above the base of a figure.

Let us check our given choices one by one.

A. Sphere:

We know that sphere is rounded from each side, so it can not have an apex.

B. Cone:

We know that a cone has an apex directly above its base, therefore, option B is the correct choice.

C. Cylinder:

We know that cylinder is a circular shape and it has no apex, therefore, cylinder is not a correct choice.

D. Cube:

We know that cube is a three dimensional figure, whose each side is equal, therefore, cube is not a correct choice either.

E. Pyramid:

Since pyramid's vertices meet directly above its base, therefore, pyramid is the correct choice.

the formula of a slope:

we have the points (-2, 7) and (2, 3). substitute:

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is: