3 years ago

Factorise fully the following: a) 5x + 40 b) 7x - 49 c) 18x + 9 d) 15x - 10

Mathematics

1 answer:

Sati [7]3 years ago

8 0

Answer:

a)5(x+8)

b)7(x-7)

c)9(2x+1)

d)5(3x-2)

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Find the standard deviation of the data set shown. Round your answer to the nearest tenth.

Degger [83]

Mark Brainliest Please

Answer:

Answer is gicen in the image attached.

Step-by-step explanation:

Standard deviation (SD) measured the volatility or variability across a set of data. It is the measure of the spread of numbers in a data set from its mean value and can be represented using the sigma symbol (σ). The following algorithmic calculation tool makes it easy to quickly discover the mean, variance & SD of a data set.

For more help check Khan academy video

https://www.khanacademy.org/math/statistics-probability/displaying-describing-data/sample-standard-deviation/v/sample-standard-deviation-and-bias