En un terreno se marca una región en forma de cruz regular para indicar una zona de aterrizaje de helicópteros. ¿Cuál es su perímetro a. 240 m b. 160 m c. 120 m d. 80 m

The physical fitness of an athlete is often measured by how much oxygen the athlete takes in (which is recorded in milliliters per kilogram, ml/kg). the mean maximum oxygen uptake for elite athletes has been found to be 60 with a standard deviation of 7.2. assume that the distribution is approximately normal.

In the figure shown below, m < 40 and ab =8. which equation could be used to find x?

Nine more than four times a number is the same as one less than twice the number. find the number?