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2 years ago

11

Use the area model to find the product of 28×32

2 answers:

dexar [7]2 years ago

7 0

896 is your answer. All you would have to do is round the 28 up to 30 then do 3×32. After that you would put a 0 at the end of your answer because you took off the 0 when you did 3×32. After that you would take away 2×30 because you rounded the 28 to 30 too make it easier. After you do that this will be what your equation will look like: 28×30= [(30×32)-(2×30)]=896 This method is called Partial Product

Rudiy272 years ago

4 0

When u times 28 by 32 you will get 896..I'm not sure if this is what u were asking for but if so here you go :)

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svetlana [45]

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We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.99}{2} = 0.005$

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Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

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