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Goshia [24]
3 years ago
12

Which equation models the problem below if c represents the number of babies whose eyes are closed? There are 12 babies in a pho

tograph, and 9 of them have their eyes open. How many babies have their eyes closed? 9 – c = 12 12 + c = 9 c – 9 = 12 9 + c = 12
Mathematics
1 answer:
attashe74 [19]3 years ago
6 0

Answer:

9+c=12

Step-by-step explanation:

Given there are 12 babies in a photograph ,Out of which 9 babies have their eyes open .So by intuition one can say that the other babies have their eyes closed.Let the number of babies with their eyes closed be "c". Then

Total number of babies=12

number of babies with their eyes open=9

number of babies with their eyes closed=c

Total number of babies=  number of babies with their eyes open +  number of babies with their eyes closed.

12=9+c

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A government official is in charge of allocating social programs throughout the city of Vancouver. He will decide where these so
otez555 [7]

Answer: (0.132132, 0.274368)

Step-by-step explanation:

Given : A simple random sample of 123 people living in Gastown and finds that 25 have an annual income that is below the poverty line.

i.e. n= 123

\hat{p}=\dfrac{25}{123}\approx0.203252

Critical value for 95% confidence interval : z_{\alpha/2}=1.96

Confidence interval for population :

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

i.e. 0.203252\pm (1.96)\sqrt{\dfrac{0.203252(1-0.203252)}{123}}

0.203252\pm (1.96)\sqrt{\dfrac{0.203252(1-0.203252)}{123}}\\\\\0.203252\pm0.071118\\\\=(0.20325-0.071118,\ 0.203252+0.071118)\\\\=(0.132132,\ 0.274368)

Hence, the 95% confidence interval for the true proportion of Gastown residents living below the poverty line : (0.132132, 0.274368)

5 0
3 years ago
Free piont (so this will not get delete) 7x8x3=
SVEN [57.7K]

Answer:

168

Step-by-step explanation:

5 0
3 years ago
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A grocer wants to make a 10-pound mixture of peanuts and cashews that he can sell for $4.75 per pound. If peanuts cost $4.00 per
ValentinkaMS [17]

Answer:

3lbs

Step-by-step explanation:

8 0
3 years ago
Carlos started at sea level, climbed a cliff to a height of 14 m, then dived 19 m. Find the level at which has dive ended
Ipatiy [6.2K]

The answer is -5 m. Sea level is 0. Add 14 to 0 and, then take 19 away from 14. Boom! You've got your answer.

Hope that helps! :D

3 0
3 years ago
PLZ HELP!!!
likoan [24]

Answer:

The rental fee is 25

Step-by-step explanation:

Total cost = rental fee plus cost per hours * number hours

t = f + 8*h  where t = total cost, f = rental fee, h = hours

73 = f + 8*6

73 = f+ 48

Subtract 48 from each side

73 - 48 = f+48-48

25 = f

The rental fee is 25

6 0
3 years ago
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