¿Cuándo son dos sistema de ecuaciones equivalentes? a. Cuando tienen las mismas incógnitas b. Cuando tienen el mismo número de ecuaciones y de incógnitas c. Cuando tienen una solución particular igual d. cuando tienen la misma solución general.

The weight of 3 eggs is shown. Assuming the three eggs are all the same weight, find the constant of proportionality.

Which of the following best defines a compound?

Solve for \( s \) \( -2 s+9=-s \) \( s=\square \)

Rodrigo drank \( 3 / 4 \) of a glass of water in the morning and \( 1 / 3 \) of a glass in the afternoon. How much water did Rodrigo drink in all? Write your answer as a fraction or as a whole or mixed number.

When studying radioactive material, a nuclear engineer found that over 365 days, \( 1,000,000 \) radioactive atoms decayed to 973,521 radioactive atoms, so 26,479 atoms decayed during 365 days. a. Find the mean number of radioactive atoms that decayed in a day b. Find the probability that on a given day, 51 radioactive atoms decayed. a. The mean number of radioactive atoms that decay per day is 72.545 (Round to three decimal places as needed.) b. The probability that on a given day, 51 radioactive atoms decayed, is (Round to six decimal places as needed.)