Answer:
1. Calculate the sum of "a", "b" and "c".
2. The perimeter equation is: 
Step-by-step explanation:
In this case, P denotes the triangle's perimeter while a, b, and c are the triangle's sides.
The definition states that the sum results from an addition operation. Thus, the statement "The perimeter P of a triangle equals the total of sides a, b, and c" means that the perimeter is determined by aggregating the lengths of the triangle's sides.
Consequently, you can express this in the following equation:

His annual savings over 52 weeks amounts to $867.
Let x represent the hot dogs
and y represent the snacks
The equation x + y = 175
Rewrite x as 175 - y
And the second equation: 2.50x + 0.75y = 262.50
Substitute to get 2.50(175 - y) + 0.75y = 262.50
Which simplifies to 437.50 - 2.50y + 0.75y = 262.50
Rearranging gives -1.75y = -175
Hence, solving for y results in y = -175 / -1.75 = 100
Thus, 100 snacks and 75 hot dogs were sold
Response: Therefore, the fraction of times heads appeared out of the entire tosses is 0.583
Detailed explanation:
Considering the following:
Total number of tosses for the coin = 60
Total occurrences of heads = 35
Calculated proportion of heads landed:
Total occurrences of heads / total number of coin tosses
Calculated head landing proportion:
= 35 / 60 = 7 / 12 = 0.5833