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Lostsunrise [7]
2 years ago
5

Work out the co ordinates of the midpoint of (-2,-1) and (-2,4)

Mathematics
2 answers:
aliya0001 [1]2 years ago
7 0

Answer:

(-2, 1.5)

Step-by-step explanation:

Midpoint:

(-2 + -2)/2, (-1 + 4)/2

(-4)/2, 3/2

-2, 1.5

s2008m [1.1K]2 years ago
4 0

Answer:

(-2,\frac{3}{2})

Step-by-step explanation:

To find the midpoint, simply use the Midpoint Formula.

The Midpoint Formula states that for two points (x_1,y_1) and (x_2,y_2), the midpoint will be: (\frac{x_1+x_2}{2} ,\frac{y_1+y_2}{2} ).

So, here, (x_1,y_1) = (-2, -1) and (x_2,y_2) = (-2, 4). The midpoint is then: (\frac{-2+(-2)}{2} ,\frac{-1+4}{2} )=(\frac{-4}{2} ,\frac{3}{2} )=(-2,\frac{3}{2})

Thus, the answer is (-2,\frac{3}{2}).

Hope this helps!

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Ahat [919]

Answer:

z=\frac{0.21 -0.15}{\sqrt{\frac{0.15(1-0.15)}{100}}}=1.68  

Step-by-step explanation:

Information provided

n=100 represent the random sample taken

X=21 represent the number of bags overfilled

\hat p=\frac{21}{100}=0.21 estimated proportion of overfilled bags

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Hypothesis

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Alternative hypothesis:p > 0.15  

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z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

And replacing the info given we got:

z=\frac{0.21 -0.15}{\sqrt{\frac{0.15(1-0.15)}{100}}}=1.68  

5 0
3 years ago
It takes a hose 2 minutes to fill a rectangular aquarium 12 inches long, 13 inches wide, and 14 inches tall. How long will it ta
rusak2 [61]

Volume of the first aquarium =  (12" x 13" x 14") = 2,184 inches³

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So it'll take the hose  17.44 times as long to fill the second one

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8 0
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Answer:

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a/b ÷ c/d

Copy dot flip

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ad / bc

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