Felipe mide una habitación usando sus pies. (Sus pies son cada uno de un pie de largo.) Estima que la habitación mide unos diez pies y medio por trece pies y medio. Calcula que el área de la habitación es: 10.5' × 13.5’ = 141.75 pies2. 1. ¿Cuál crees que es la mejor descripción de la zona de la habitación? (Marque su elección.)

A. El área de la habitación es exactamente 141.75 pies2.
B. El área de la habitación es de aproximadamente 142 pies2.

2. Explique su respuesta:

A1,200 kg car is accelerated at 3.7 m/s2. what force was needed to produce this acceleration? a. 4,440 n b. 324.3 n c. 4,388 n d. 304.3 n

An insurance company wants to know if the average speed at which men drive cars is higher than that of women drivers. the company took a random sample of 27 cars driven by men on a highway and found the mean speed to be 72 miles per hour with a standard deviation of 2.2 miles per hour. another sample of 18 cars driven by women on the same highway gave a mean speed of 68 miles per hour with a standard deviation of 2.5 miles per hour. assume that the speeds at which all men and all women drive cars on this highway are both approximately normally distributed with unknown and unequal population standard deviations.

Assume similar data for the motion of the blood in your aorta. estimate how many beats of the heart it will take the blood to get from your heart to your brain. (assume that the distance from your heart to your brain is 30 cm)