When rick measures the shadow of a yard stick ,it is 7 inches. At the same time ,the shadow of the tree he would like to chop down is 42 inches. How tall is the tree in yards?

Use sigma notation to represent the following series for 9 terms.

Answer asap and if you do you will get brainliest. catherine buys a gallon of ice cream from the store. after taking it home, she eats a fifth of a gallon of ice cream. her sister eats some of the ice cream as well. if two-thirds of the original amount of ice cream is left, then what fraction of a gallon of ice cream did her sister eat?

Two trains leave stations 546 miles apart at the same time and travel toward each other. one train travels at 95 miles per hour while the other travels at 115 miles per hour l. how long will it take for the two trains to meet