Using the linear regression equation, the concentration of the unknown solution is 0.2161 M.
Linear regression describes the relationship of two variables. It may not be exact but it is the line that best fit the data. The equation for a linear regression is in the form y = bx + a, where x and y are the two variables.
If the absorbance of an unknown was determined to be 0.67 absorbance units, using the linear regression equation provided from the plot, substitute the value of absorbance to the variable y and solve for the value of x or the concentration.
y = 3.8674x - 0.1657
0.67 = 3.8674x - 0.1657
3.8674x = 0.67 + 0.1657
3.8674x = 0.8357
x = 0.2161
Hence, the concentration is 0.2161 M.
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In 8, 9, 10, all the triangles are similar, meaning corresponding sides have the same ratio.
8. hypotenuse / (short side) = 25/x = x/9
x² = 25*9 = 5²×3²
x = √(5²×3²) = 5*3 = 15
9. (long side) / (short side) = x/7 = 9/x
x² = 7*9
x = √(9*7) = 3√7
10. (short side) / (long side) = x/48 = 48/64
x = 48²/64 = 36
Answer:
The quantity of total serving soup does restaurant has = T = 2
liters .
Step-by-step explanation:
Given as :
The quantity of large serving soup =
liters
The total quantity of soup does restaurant has = 3 liters
Let the quantity of total serving soup does restaurant has = T liters
So, According to question
The quantity of total serving soup does restaurant has = The quantity of large serving soup × total quantity of soup does restaurant has
Or, T =
× 3
Or, T = 
Or, T =
∴ T = 2
liters
So, quantity of total serving soup does restaurant has = T = 2
liters
Hence,The quantity of total serving soup does restaurant has = T = 2
liters . Answer