the shadow of a man who is 1.80m tall is 3.90 m long. if at the same the shadow of trees is 5.20m long. how tall the tree is?​

Write the slope-intercept form of the line that passes through the point (1, 0) and is parallel to x - y = 7. t

At the "no mutants allowed" country farm, every sheep has 4 legs, every chicken has two legs, and all animals have only 1 head. asked to count how many sheep and chicken are in the fields, a farm boy reports back that there are 140 feet and 50 heads. how many sheep and chicken are there? there are sheep and chicken at the farm.

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years