What is a reasonable percent error in chemistry?

1 answer:

8 0

For physics, we use half the smallest division of the equipment used.
For chemistry, it should be the same.

The formula for percent error: delta(x)/x * 100% = delta(y)/y

Hope I helped :)

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Really need help...

Andre45 [30]

Sinθ = 16/20 = 0.8
θ = arcsin(0.8) ≅ 53°
:::::
Use ^2 to represent ².
Pythagorean identity:
sin²(x) + cos²(x) = 1

4 0

3 years ago

The reduced row echelon form of a system of linear equations is given. Write the system of equations corresponding to the given

morpeh [17]

Answer:

a. x +8z = -1

b. y +5z = 2

c. 0 = 0

d. (x, y, z) = (-1-8z, 2-5z, z)

Step-by-step explanation:

As with the original matrix, the first three columns are the coefficients of the respective variables, and the last column is the constant on the right of the equal sign.

a. The first row represents the equation ...

x + 8z = -1

b. The second row represents the equation ...

y + 5z = 2

c. The third row represents the equation ...

0 = 0

This equation expresses a truth, so indicates the original system of equations was consistent, but dependent. (a third row of 0 0 0 1 would indicate inconsistent, no solution)

d. The system is consistent but dependent. The solution can be written as ...

(x, y, z) = (-1-8z, 2-5z, z) . . . . where z is a free variable

6 0

3 years ago

Find the diameter of a cone that has a volume of 104.67 cubic inches and a height of 4 inches. Use 3.14 for pi.

Lady bird [3.3K]

Answer:

Step-by-step explanation:

The volume of a cone is

$V=\frac{1}{3}\pi r^2h$