Erin bought 3 more pounds of apples than katie. together katie and erin bought 13 pounds of apples. how many pounds of apples did katie buy?

(big pts for the first to answer and i will give u a medel for the first to give a good ! so )

Bob the builder is making 480kg of cement mix. this is made by cement, sand and gravel in the ratio 1: 3: 4

What is the value of x? assume that the line is tangent to the circle.

Need to finish my juan wants to build a greenhouse in his back yard. he needs to maximize the ratio of floor area to structure volume in order to provide the most room for plants while minimizing the area to be heated. find the description of the structure that best meets juan’s criteria. a.) a hemisphere with a diameter of 12 feet b.) a cube with a side length of 12 feet c.) a cone with a diameter of 12 feet and a height of 10 feet d.) a square pyramid with a base side length of 12 feet and a height of 9 feet