Answer:
c = 13
Step-by-step explanation:
pythogoras theorem
a² + b² = c²
5² = 25
12² = 144
25 + 144<em> </em>= 169
√169 = 13
c = 13
<span>Answer:
She (Serena) made 30 grams of 33.33% sugar syrup.
Solution:
10 grams sugar + 20 grams water
As 10 grams of sugar added to 20 grams of water, total mixture became 30 grams.
Percentage of sugar in total mixture (sugar syrup) = 10 grams sugar in 30 grams syrup.
% by mass = [(mass of solute) / (mass of solute + mass of solvent)] * 100
This gives = [(10) / (10+20)] * 100 = 33.33%</span>
Answer:
the first one
Step-by-step explanation:
