3 years ago

Write the opposite to the following:- 50km Towards east

Mathematics

1 answer:

kap26 [50]3 years ago

4 0

Answer:

50 kilometres towards west .......

i guess

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miskamm [114]

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3 years ago

If possible, find (a) A - B, (b) 3A, (c) 3A - 2B, and (d) AB in these two rows. Thanks a lot.

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Wow matrixes gg
a)[ 1 1 4 ]
[-7 -6 -1 ]
[ 0 4 0 ]

b)[ 15 12 12 ]
[-12 -12 0 ]
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c)[ 7 4 12 ]
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In a study of cell phone use and brain hemispheric dominance, an Internet survey was e-mailed to 2455 subjects randomly select

Genrish500 [490]

Answer: 0.355,0.405)

Step-by-step explanation:

Given : Significance level : $\alpha=1-0.99=0.01$

Number of subjects (n) = 2455

Number of surveys returned = 931

The probability of surveys get return will be :-

$p=\dfrac{931}{2455}=0.379226069246\approx0.38$

The confidence interval for proportion is given by :-

$p\pm z_{\alpha/2}\times\sqrt{\dfrac{p(1-p)}{n}}$

$0.38\pm z_{0.005}\times\sqrt{\dfrac{0.38(1-0.38)}{2455}}\\\\=0.38\pm(2.576)0.0098\\\approx0.38\pm0.025=(0.355,0.405)$

Hence, the 99% confidence interval for the proportion of returned surveys : (0.355,0.405)

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3 years ago

Chris ate 1/4 of the pizza.if the pizza has eight slices, how many slices are lef

lana66690 [7]

Answer:

Step-by-step explanation:

1/4 = 2/8

8/8 - 2/8 = 6/8

This means 6 slices are left out of 8 slices.

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3 years ago

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jeka94

Answer:

the answer is c

Step-by-step explanation:

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3 years ago

Write the opposite to the following:- 50km Towards east​

Write the opposite to the following:- 50km Towards east