The 1st row has 15 chairs.
The 2nd row has 15 + 3 = 18 chairs.
The 3rd row has 18 + 3 = 15 + 2•3 = 21 chairs.
The 4th row has 21 + 3 = 15 + 3•3 = 24 chairs.
The pattern continues, so that the n-th row has 15 + (n - 1)•3 = 3n + 12 chairs.
If there are 15 rows, then the total number of chairs is
where we use the formulas
I'm pretty sure it's A
Explanation:
I did a few quick Google searches on ap classes because I myself do not take them a I read that most colleges do take ap classes as credit. it's no guaranteed however as it says many, not all. and for C I looked it up and I'm assuming they can be taken anywhere. take what I say with a grain of salt though because like I said I just googled it, hope it helps though.
Answer: Threatening native lands and trying to push traditional societies of their lands.
Explanation:
Answer/Explanation:
Energy is transferred from a hotter object to a cooler object. This is largely because of the collision of the molecules of a hotter body with the molecules of a cooler body ultimately leading to a transfer of energy from the hotter body to the cooler body. This now makes the temperature of the cooler body to rise.
Remember that temperature is a measure of the average kinetic energy of the molecules in a body.
Therefore, since the water is at a higher temperature, energy is transferred from the water to the hand and the temperature of the hand rises accordingly.
When the temperature of an object increases, the average kinetic energy of its particles increases. When the average kinetic energy of its particles increases, the object's thermal energy increases. Therefore, the thermal energy of an object increases as its temperature increases.
