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allochka39001 [22]
3 years ago
8

I need whats in the red rectangle

Mathematics
1 answer:
lorasvet [3.4K]3 years ago
3 0

Answer:

9

Step-by-step explanation:

sqrt(5) + sqrt(405)

sqrt(5) + sqrt( 81*5)

sqrt(5) + sqrt(81) sqrt(5)

sqrt(5) +9 sqrt(5)

10 sqrt(5)

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Answer:

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Step-by-step explanation:

-Given the sample size is 400 and the desired proportion is 16.

-The confidence interval can be determined as follows:

CI=\hat p\pm z\sqrt{\frac{\hat p(1-\hat p}{n}}\\\\\hat p=x/n=16/400=0.04

#We the use this proportion to find the CI at 95%:

CI=0.04\pm 1.96\times \sqrt{\frac{0.04(1-0.04)}{400}}\\\\=0.04\pm 0.0192\\\\=[0.0208,0.0592]

Hence, the 95% confidence interval is 0.0208<p<0.0592

7 0
3 years ago
If 1 mile is equal to 1.61 kilometers, how many kilometers are there in 50 miles
Alik [6]

kilometers and miles are units used to measure distance.

1 mile is equal to 1.61 km

so if 1 mile is equivalent to 1.61 km

then to see how many kilometers are there in 50 miles we have to multiply 50 miles by 1.61 km/mile

therefore the number of km in miles is - 50 miles x 1.61 km/mile = 80.5 km

distance in km - 80.5 km

7 0
3 years ago
Read 2 more answers
In a classroom of 3333 students, the ratio of boys to girls is 3:83:8. How many boys are in the class?
Paladinen [302]
3x+8x=3333
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6 0
3 years ago
Please, please, please, please help
Alexeev081 [22]

Answer:

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Step-by-step explanation:

6 0
2 years ago
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algol [13]

Answer:

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