A garden table and a bench cost $1004 combined. The garden table costs $54 more than the bench. What is the cost of the bench?

Mathematics

1 answer:

tatiyna3 years ago

8 0

Answer:

The bench cost $556.

Step-by-step explanation:

divide $1004 by 2. (equals 502)
subtract 54 from 502 which equals 448.
1004-448=556
check your math with 556+448=1004
$556 is the cost of the bench.

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use the plot of the concentration of cu(no3)3 versus absorbance provided. if the absorbance of an unknown was determined to be 0

Helen [10]

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.

Learn more about linear regression here: brainly.com/question/25311696

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