A person and a building cast a shadow at the same time of day. The person is 6 feet tall and casts a shadow of 2.5 feet. The building casts a shadow of 20 feet. What is the height of the building?

In the rectangle below ac=30 units what is de

Atriangular field has sides of lengths 21, 39, and 41 yd. find the largest angle. (round your answer to the nearest degree.)

Suppose a laboratory has a 30 g sample of polonium-210. the half-life of polonium-210 is about 138 days how many half-lives of polonium-210 occur in 1104 days? how much polonium is in the sample 1104 days later? 9; 0.06 g 8; 0.12 g 8; 2,070 g