These are the high temperatures for one week in July, Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
749
75°
80°
76°
75°
81°
78°
What is the mean high temperature for this week?
A. 74°
B. 75°
C. 76°
D. 77°
E 78°

76, because mean is the middle.

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.