Researchers are studying the effects of exercise on resting pulse rates. They have found 20 men to participate in the study. 10 of the men get at least 150 minutes of moderate exercise each week (Group 2) and the other 10 men do not exercise (Group 1). The resting pulse rate data for the two groups at the end of the study are shown in the table. The pulse rates are in beats per minute.

You are responsible for designing a new city. you are inspired by pierre charles l'enfant, who laid out the streets of our nation's capital. numbered streets run north and south, and lettered streets run east and west. avenues are named after states, and they intersect the streets on a diagonal. the streets are parallel and the intersections form similar triangles. 18th st. is 454 meters long and the intersection of 18th and k st. is 207 meters from connecticut ave. if 19th st. and k st. is 385 meters from connecticut ave., what is the length of 19th st.?

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?

Use the second shift theorem to find the inverse laplace transform of (e^−3s) / (s^2 + 2s − 3)