The answer is 84%. This is because to get a percentage out of 100% you need to have 100 in your total so you multiply 50 *2 to get 100 and since you changed the 50 you also have to change your 42 by the same equation. So 42*2 is 84. Hope this helped please comment if you need clarifying.
<u> 12x³ - 12x </u><u /> = 3/7 - 1/56x² - 3/7 = 3/7 - 3/7 - 1/56x² = -1/56x²
28x³ - 56x² + 28x
The type of model shown in the structure of water given above is ball-and-stick model
The atomic structure consists of two hydrogen atoms and one oxygen atom (H-O-H)
However, water has some characteristics which makes it unique from other liquids. These characteristics include the following:
- Water is less dense as a solid than as a liquid.
- Water is polar
- Water is an excellent solvent
- Water has high heat capacity
- Water has high heat of vaporization.
- Water has cohesive and adhesive properties.
- Pure water is colorless
- Pure water is always tasteless and odorless.
<h3>What is a compound?</h3>
A compound is a substance which contains two or more elements which are chemically combined together.
Below are some examples of chemical compounds:
- Sodium hydroxide
- Calcium carbonate
- Tetraoxosulphate vi
So therefore, the type of model shown in the structure of water given above is ball-and-stick model
Learn more about chemical compounds:
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Honestly i dont know but i divided 60 BY 3% God help you and I lol sorry!
Suppose the three sides are a, b, and c, with c being the longest, a being the shortest
first equation: c=(a+b)-66
second equation: 2a=c-55=> c=2a+55
plug c=2a+55 into the first equation: 2a+55= a+b-66 => b=a+121
a+b+c=a+(a+121)+(2a+55)=7272 =>4a+176=7272 =>a=1774
a=1774, b=1895, c=3603
