3 years ago

Helpppp 3x + 10 3x + 2 x = [?]

Mathematics

1 answer:

zysi [14]3 years ago

7 0

Answer:

x=0

Step-by-step explanation:

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7 ft=____ inches show work

dusya [7]

Answer:7x12= 84

Step-by-step explanation:

7x10=70

7x2=14

70+14=84

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What is the sum of the exterior angels of a 28 sided polygon ?

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A researcher wishes to estimate the proportion of X-ray machines that malfunction. A random 275 sample of machines is taken, and

Dominik [7]

Answer:

Following are the solution to the given question:

Step-by-step explanation:

$95\%$ Confidence Interval for both the percentage of all x-ray machines

p = the machinery's share is not working:

$= \frac{228}{275}\\\\ = 0.829$

$\text{Margin of Error} = Z_{(\frac{\alpha}{2})} \times \sqrt{( p \times (1-p)}{n})$

$= 1.96 \times \sqrt{(0.829 \times \frac{0.171}{275})} \\\\= 1.96 \times 0.023 \\\\= 0.045$

Lower $95\%$ Confidence interval = p - error margin $= 0.829 - 0.045 = 0.784$

Upper $95\%$ Confidence Interval = p + error margin $= 0.829 + 0.045 = 0.874$

So, $95\%$ Confidence Interval $= ( 0.78 , 0.87 )$

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otez555 [7]

Answer:

can you write these in proper way

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2 years ago

HELP QUICK PLSS

Snezhnost [94]

Answer:

pretty sure the tree's 20 feet

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