Patty has a fish pond in her backyard. even though the air temperature outside has change 35 degrees from sunrise to sunset, the water temperature in the fish pond has only changed 2 degrees. the reason for this lack of temperature change in the water is that it has a high

The reason for this lack of temperature change in the water is that it has a high specfic heat .

Step-by-step explanation:

Definition of specfic heat .

The amount of heat required  per unit mass to raise the temperature by one degree Celsius .

Reason = The reason for this lack of temperature change in the water is due to hydrogen bonding present in water molecules .These hydrogen bonds  takes  large amount of heat gain for just 1 degree Celsius change in temperature. therefore water temperature increases slowly.

according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.

step-by-step explanation:

x= cost per bracelet

number of bracelets * x + shipping charge = total cost

so

9x+9=72