A) Pensé un número, le sume - 4 5 y obtuve 5.6. ¿Qué número pensé? b) Pensé un número, le sume -2/5 y obtuve -3.2. Que número pensé?
c) Pensé un número, le sume 2/3 y obtuve -3. Que numero pensé?
d) Pensé un número, le reste -2.4 y obtuve -3.2. Que número pensé?
e) Pensé un número, le reste -2.6 y obtuve 4. Que número pensé?

The label on the car's antifreeze container claims to protect the car between ? 40°c and 125°c. to convert celsius temperature to fahrenheit temperature, the formula is c = 5 over 9 (f ? 32). write and solve the inequality to determine the fahrenheit temperature range at which this antifreeze protects the car. ? 40 > 5 over 9 (f ? 32) > 125; ? 40 > f > 257 ? 40 < 5 over 9 (f ? 32) < 125; ? 40 < f < 257 ? 40 < 5 over 9 (f ? 32); ? 40 < f 5 over 9 (f ? 32) < 125; f < 257

How to do this , and can some one explain

The weights of broilers (commercially raised chickens) are approximately normally distributed with mean 1387 grams and standard deviation 161 grams. what is the probability that a randomly selected broiler weighs more than 1,425 grams?