Which calculation can be used to find the value of p in the equation p3 = 8?
p equals cube root of 8
p equals 3 multiplied by the square root of 8
p equals 2 multiplied by square root of 8
p equals square root of 8
Solution:
When we write p3 = 8 it implies that a number multiplied by itself thrice will give the number 8 which basically means the following:
p × p × p = 8
We know that
2 × 2 × 2 = 8
Therefore we say that the cube root of 8 is 2. There are other ways this can be represented.
To find the value of p we we have to cube root of 8 which can be written as :
p = 81/3
Or
\(p = \sqrt[3]{8}\)
Which means that p is the cube root of 8.
Similarly 27 can also be written as:
27 = 3 × 3 × 3
And therefore 3 is called the cube root of 27 which is written as :
p = 3 = 271/3
Or
\(p = 3 = \sqrt[3]{27}\)
Which calculation can be used to find the value of p in the equation p3 = 8?
Summary:
The calculation that can be used to find the value of p in the equation p3 = 8 is p equals cube root of 8.
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