Step-by-step explanation:
<h3>Potential energy is the energy stored in an object due to its position relative to some zero position. An object possesses gravitational potential energy if it is positioned at a height above ( or below ) the zero height.</h3><h3>- A raised weight </h3><h3>- Water behind a dam</h3><h3>- A car parked at the top of a hill</h3><h3>- A snow pack ( Potential avalanche )</h3><h3>- A yoyo before it is released</h3><h3>- River water at the top of a water hill</h3><h3>- A book on top of a table before it falls</h3><h3>- A child at the top of a slide</h3>
Using the three trigonometric functions can be used to calculate unknown side lengths and angle in a right-angle triangle only.
But, if ever you we're given to find a non right-angle triangle, you will have to use sine rule or cosine rule.
To solve this problem, let's use some numbers to help us compare.
Say each tire costs $100.
Deal 1: Buy 3, get 1 free
Total = $300
Ratio = 3:4
---To find the ratio, we'll take the deal price and compare it to the original price ($400)
Deal 2: 1/4 off the total price
1/4 of 400 = 100
400 - 100 = 300
Total = $300
Ratio = 3:4
Therefore, the deals are equivalent.
Correct Answer: D
Hope this helps!
The percent change if a city that used to produce 2050 kilowatt hours has reduced their consumption to 1125 kilowatt hours is 45.122% decrease.
<h3>What is percentage change?</h3>
Percent increase and percent decrease are measures of percent change, which is the extent to which a variable gains or loses intensity, magnitude, extent, or value.
we know,
% change = (final- initial) / initial * 100
=(1125-2050)/1125 *100
=45.122%
Hence, percentage change be 45.122% decrease.
Learn more about percentage change here:
brainly.com/question/14656289
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