3 years ago

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]3 years ago

4 0

I guest it is -z^2+1

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Ghella [55]

$10-\frac{3x-1}{2} =\frac{6x+3}{11}$

$10 = \frac{6x+3}{11} + \frac{3x-1}{2}$

$10 = (\frac{6x+3}{11} \times \frac{2}{2} ) + (\frac{3x-1}{2} \times \frac{11}{11} )$

$10 = ( \frac{2(6x + 3)}{22} ) + ( \frac{11(3x - 1)}{22} )$

$10 = \frac{12x + 6}{22} + \frac{33x - 11}{22}$

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$10 = \frac{(12 x + 33x) + (6 - 11)}{22}$

$10 = \frac{45x - 5}{22}$

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1 year ago

the mean of normally distributed test scores is 80 and the standard division is 5. If there are 186 test scores in the data samp

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Answer:

Step-by-step explanation:

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Step-by-step explanation:

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