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3 years ago

NEED CORRECT ANSWERS NOW! WILL MARK BRAINLIEST!!

Mathematics

1 answer:

rusak2 [61]3 years ago

6 0

(a) There are 1/4 cups of flour per serving

<u>WORK:</u> 1.5/6=1/4 (change 1 1/2 into decimal)

(b) <u>**not sure**</u> There are approximately .18 cups of sugar per serving.

<u>WORK:</u> 9/2+4/12=13/12 and then divide 13/12 by 6.

(c) You need 2 1/4 cups of flour to make 9 servings.

<u>WORK:</u> 1.5/2=.75

1.5+.75=2.25=2 1/4

(d) Someone would need to know the amount of sugar to properly make the recipe and if needed know how much to put if you wanted to split the recipe.

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<h3>How to determine standard deviation?</h3>

The table of values is given as:

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Start by calculating the mean using:

$\bar x = \frac{\sum fx}{\sum f}$

This gives

$\bar x = \frac{1.5 * 13 + 5.5 * 13 + 9.5 * 10 + 13.5 * 11 + 17.5 * 0 + 21.5 * 3}{13 + 13 + 10 + 11 + 0 +3}$

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The standard deviation is then calculated as:

$\sigma = \sqrt{\frac{\sum f(x - \bar x)^2}{\sum f }}$

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Read more about standard deviation at:

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