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1 year ago

Using the midpoint formula find BC if B(8,-7) and C(-4,-2)

Mathematics

1 answer:

arsen [322]1 year ago

6 0

Answer:

(2, -4.5)

Step-by-step explanation:

Used midpoint formula

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The following scatter plot demonstrates that there is no correlation between the two quantities. True or False? [Picture attache

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3 years ago

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A bus travels 340 km south along a straight path with an average velocity of 83 km/h to the south. The bus stops for 21 min, the

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3 years ago

The mean weight of nine players and three reserve players is 188 pounds.find the mean weight of the three reserve players

Katen [24]

Answer:

83.56/p

Step-by-step explanation:

Let the weight of the players = p

Let the weight of the reserve players = r

Since there 9 players, there weight = 9p

And since there 3 reserve players, there weight = 3r

(9p + 3r) / 12 = 188

9p + 3r = 12 * 188

9p + 3r = 2256

Solve for r

r = 2256 / 27p

r = 83.56/p

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3 years ago

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Darya [45]

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3 years ago

A soft-drink machine is regulated so that the amount of drink dispensed is approximately normally distributed with known standar

Vsevolod [243]

Answer:

This is a reasonable decision because the sample size has no effect on the 90% confidence interval

Step-by-step explanation:

90% confidence interval

larger sample size = 20

condition : sample mean ( x-bar ) is the same for both samples

This is a reasonable decision because the sample size has no effect on the 90% confidence interval

from condition 1 :

Amount of drink dispensed is normally distributed with known standard deviation , given a random sample of n drinks and the sample mean at a confidence interval of 90%

for condition 2 :

sample size = 20

mean = 2.25 ( assumed value )

std = 0.15 ( assumed value )

Z = 1.645 ( Z-value )

determine the 90% confidence interval

= mean ± z $\frac{std}{\sqrt{n} }$

= 2.25 ± 1.645 $\frac{0.15}{\sqrt{20} }$

= 2.25 ± 0.0335 = ( 2.2835 , 2.2165 )

7 0

2 years ago