An aerial photograph is taken of a building. The photograph is made when the angle of elevation of the sun is 40°. The shadow is determined to be 70 feet long. How tall is the building? The building is approximately ?? feet tall.

You are making a battery for a science project. you have copper wire for your first electrode. you need to choose a conductor, a second electrode, and a device to plug into your battery. you have already chosen a lemon conductor. complete each statement below about the options that include a lemon conductor.

Lin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. she knows that the total cost to download 3 videos was $12. her work to find the equation is shown below. joylin’s work step 1 k= 3/12= 0.25 step 2 y= 0.25x where did joylin make her first error?

The area of each triangle is 7 square units. the surface area of the triangular prism is