You would distribute, 300 times 80 is 2400 and -3x times 1x is -3x so the equation would be y=2400-3x
Answer:
The lowest whole number ratio of the elements in a compound is called <u><em>the empirical formula.</em></u>
Step-by-step explanation:
A molecular formula consists of the chemical symbols of the constituent elements of a compound followed by numerical subscripts that describe the number of atoms of each element present in the molecule.
Then, the representation of the elements that form a compound and the proportion in which they are found, or the number of atoms that form a molecule is called the chemical formula.
The empirical formula is an expression that represents the simplest proportion in which atoms that form a chemical compound are present. It is then the simplest representation of a compound. Therefore, it is called the minimum formula.
In summary, the empirical formula is a formula that indicates the simplest integer ratio of all atoms in a molecule.
Finally, <u><em>the lowest whole number ratio of the elements in a compound is called the empirical formula.</em></u>
Answer:
2.1 m
Step-by-step explanation:
The gutter is in the shape of a cylinder.
Its volume is 20 liters and its diameter is 11 cm (0.11 m).
Its radius is half of its diameter => r = 0.055 m.
The volume in cubic metres:
1 litre = 0.001 cubic metres
20 litres = 20 * 0.001 = 0.02 cubic metres
The volume of a section of guttering is given as:
![V = \pi r^2h](https://tex.z-dn.net/?f=V%20%3D%20%5Cpi%20r%5E2h)
where h = length of the guttering
Therefore:
![0.02 = \pi * 0.055^2 * h\\\\0.02 = 0.009503h\\\\h = 0.02 / 0.009503\\\\h = 2.10 m](https://tex.z-dn.net/?f=0.02%20%3D%20%5Cpi%20%2A%200.055%5E2%20%2A%20h%5C%5C%5C%5C0.02%20%3D%200.009503h%5C%5C%5C%5Ch%20%3D%200.02%20%2F%200.009503%5C%5C%5C%5Ch%20%3D%202.10%20m)
The length of the section of guttering is 2.1 m long.
Answer:
65
Step-by-step explanation:
35+40+27+42+45+50=249 249+65=315 315/7=45
Answer: I need help on this did you ever find the answer
Step-by-step explanation: