2 years ago

Factorise this expression as fully as possible 2x^2+6x

1 answer:

3 0

Answer:

(Factor out 2x from the expression)

2x (x +3)

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matrenka [14]

14 divided by 20 is 0.7
Multiply that by 100
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nlexa [21]

answer is C

He made an error in Step 3. He should have subtracted 2 from both sides.

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BartSMP [9]

5 pieces X 1.25 = 6.25

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juin [17]

Answer:

Standard deviation 46.3

Step-by-step explanation:

A 28% of the distribution is equivalent to a z score of -0.5828, you can use a z table to find that.

Z score is calculated as follows:

$z = \frac{x-\mu}{\sigma}$

x is the number being evaluated

μ is the mean

σ is the standard deviation

And it is used to calculate how many standard deviations you are from the mean of the sample.

Replacing with the known information you can calculate the standard deviation:

$\sigma=\frac{x-\mu}{z} =\frac{76-103}{-0.5828}= 46.3$

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3 years ago

m_a_m_a [10]

The answer is no y varies 8 x varies 2

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3 years ago