Subtract: (-14z^2+1)-(-13z^2)

2 answers:

5 0

$( - 14 {z}^{2} + 1) - ( - 13 {z}^{2} ) \\ = - 14 {z }^{2} + 1 + 13 {z}^{2} \\ = ( - 14 {z}^{2} + 13 {z}^{2} ) + 1 \\ = - {z}^{2} + 1$
The answer is -z^2+1

sattari [20]4 years ago

4 0

I guest it is -z^2+1

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<h3>Range and standard deviation:</h3>

The range of a data-set is given by the difference <u>between the highest value and the lowest value in the data-set</u>.

The standard deviation of a data-set is given by the <u>square root of the sum of the difference squared of each observation and the mean, divided by the number of observations</u>.

Item a:

The lowest value is of 0.

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Hence:

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Item b:

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