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masha68 [24]
2 years ago
6

We would like to estimate the proportion of uf students who owns a scooter to within 1% of the truth, with 95% confidence. We be

lieve around 20% of students do. How many students should be sampled?.
Mathematics
1 answer:
Varvara68 [4.7K]2 years ago
8 0

Answer: 3458

i hope this work for you

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Which of the following is a solution of x2 + 2x + 8?
zubka84 [21]
Using the quadratic equation we get:
\frac{ - 2 + - \sqrt{4 - 32} }{2} = \frac{ - 2 + - \sqrt{ - 28} }{2}

Factoring out 2 we get
\frac{ - 2 + - 2\sqrt{ - 7} }{2} = - 1( + - ) \sqrt{ - 7}
Factoring out the imaginary number:
- 1 + \sqrt{7} i \: (and) \: - 1 - \sqrt{7} i
So b.
4 0
3 years ago
1. This composite figure is created by placing a sector of a circle on a rectangle. What is the area of this composite figure? S
White raven [17]

Answer:

29.92 m² (nearest hundredth)

Step-by-step explanation:

\textsf{Area of a sector}=\dfrac{\theta}{360\textdegree}\pi r^2

\implies \textsf{area}=\dfrac{30}{360\textdegree}\pi \cdot 5.5^2=\dfrac{121}{48}\pi \textsf{  m}^2

Area of rectangle = width × length

⇒ area = 4 × 5.5 = 22 m²

Total area = area of sector + area of rectangle

⇒ total area = \dfrac{121}{48}\pi +22 = 29.91943148... = 29.92 m² (nearest hundredth)

6 0
2 years ago
Smooth, suave, ingratiatingly pleasant
mash [69]
I say the answer is B. Bland

4 0
3 years ago
Prove why this makes sense.
olchik [2.2K]

Answer:

it doesn't

Step-by-step explanation:

hehe, try again

6 0
2 years ago
Read 2 more answers
Evaluate 16 + 20/t for t =4<br> steps please
Makovka662 [10]

Answer:

21

Step-by-step explanation:16+20/t, T=4 so its 16 + 20/4, 20/4 is 5, 16+5 = 21.

5 0
2 years ago
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