Trees in urban areas keep air fresh by absorbing carbon dioxide. a city has $2100 to spend on planting spruce and maple trees. the land available for planting is 45,000 square feet. spruce trees cost $30 to plant and require 600 square feet of space. maple trees cost $40 to plant and require 900 square feet of space. spruce trees absorb 650 lb/yr of carbon dioxide and maple trees absorb 300 lb/yr of carbon dioxide. how many of each tree should the city plant to maximize carbon dioxide absorption?

Part a what is the area of triangle i? show your calculation. part b triangles i and ii are congruent (of the same size and shape). what is the total area of triangles i and ii? show your calculation. part c what is the area of rectangle i? show your calculation. part d what is the area of rectangle ii? show your calculation. part e rectangles i and iii have the same size and shape. what is the total area of rectangles i and iii? show your calculation. part f what is the total area of all the rectangles? show your calculation. part g what areas do you need to know to find the surface area of the prism? part h what is the surface area of the prism? show your calculation. part i read this statement: “if you multiply the area of one rectangle in the figure by 3, you’ll get the total area of the rectangles.” is this statement true or false? why? part j read this statement: “if you multiply the area of one triangle in the figure by 2, you’ll get the total area of the triangles.” is this statement true or false? why?

When turned about its axis of rotation, which shape could have created this three-dimensional object?

Solve -2(4y + 6) = 52. 5 -5 8 -8 and !