54 I believe because well you can break the shape up into some triangles and a square to find the area.
12,600 is 18 tones which is 18,000 kg - 30%
The correct answer for the given question is B. Heat is written as a reactant in the equation.
<h3>What is endothermic reaction?</h3>
An endothermic reaction is a reaction in which is reactants absorbs heat from the surrounding to give the product or heat supplied is the reactant.
Suppose if A and B are reactants that forms product C and D,
and H be the heat absorbed or supplies to the reactants.
Then for an endothermic reaction we can write-
A + B + Heat ---> C + D
Since, Heat is absorbed at the reactant side then it is called as endothermic reaction.
Hence,the correct answer for the given question is B. Heat is written as a reactant in the equation.
More about endothermic reaction:
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Answer:
x = 80°
Step-by-step explanation:
Angle on a straight line = 180°
(x + 40)° + (x - 20)° = 180°
x + 40° + x - 20° = 180°
2x + 20° = 180°
2x = 180° - 20°
2x = 160°
x = 160°/2
x = 80°
Check:
(x + 40)° + (x - 20)° = 180°
(80° + 40°) + (80° - 20°) = 180°
120° + 60° = 180°
180° = 180°
